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pvfj5ugro:master
pvfj5ugro:XZG——伪代码2
pvfj5ugro:XZG_伪代码
pvfj5ugro:SearchbyNum
pvfj5ugro:xzg_SortbyScore流程图
pvfj5ugro:XZG_SortbyName流程图
pvfj5ugro:XZG_AverSumofEveryCourse流程图
pvfj5ugro:ZY-ReadfromFile
pvfj5ugro:ZY-WritetoFile
pvfj5ugro:XZL_StatisticAnalysis
pvfj5ugro:ZY-PrintScore
pvfj5ugro:XZG_AsScortbyNum流程图
pvfj5ugro:XZL_SearchbyName
pvfj5ugro:xzg_SortbyScore
pvfj5ugro:Cx330_AverSumofEveryStudent
pvfj5ugro:Cx330_ReadScore
pvfj5ugro:XZG_main函数详细实现流程图
pvfj5ugro:Cx330_小修小补
pvfj5ugro:XZL_打印学生成绩
pvfj5ugro:Cx330_统计各分数段的学生人数及所占的百分比
pvfj5ugro:XZG_从文件中读取学生的学号，姓名，成绩等信息写入结构体stu中
pvfj5ugro:XZG_交换法实现字符串按字典顺序排序
pvfj5ugro:ZY_计算每门课程的总分和平均分
pvfj5ugro:ZY_计算每个学生各门成绩的总分和平均分
pvfj5ugro:XZG_按选择法将将数组num的元素值从低到高排序
pvfj5ugro:ZY_显示菜单并获得输入选项
pvfj5ugro:ZY_输入n个同学的m门成绩
pvfj5ugro:XZL_输出n个学生的学号、姓名及m门课程的成绩到文件中
pvfj5ugro:XZG_按选择法将数组sum的元素值排序
pvfj5ugro:Cx330_按学号查找学生成绩并显示查找结果
pvfj5ugro:XZL_交换两个字符串
pvfj5ugro:XZL_交换两个长整型数据
pvfj5ugro:XZL_交换两个单精度浮点型数据
pvfj5ugro:XZL_使数据按降序排序
pvfj5ugro:XZL_使数据按升序排序
pvfj5ugro:Cx330_基本框架
pvfj5ugro:Cx330_3
pvfj5ugro:Cx330
p639fkpsm:master
p639fkpsm:XZG——伪代码2
p639fkpsm:XZG_伪代码
p639fkpsm:SearchbyNum
p639fkpsm:xzg_SortbyScore流程图
p639fkpsm:XZG_SortbyName流程图
p639fkpsm:XZG_AverSumofEveryCourse流程图
p639fkpsm:ZY-ReadfromFile
p639fkpsm:ZY-WritetoFile
p639fkpsm:XZL_StatisticAnalysis
p639fkpsm:ZY-PrintScore
p639fkpsm:XZG_AsScortbyNum流程图
p639fkpsm:XZL_SearchbyName
p639fkpsm:xzg_SortbyScore
p639fkpsm:Cx330_AverSumofEveryStudent
p639fkpsm:Cx330_ReadScore
p639fkpsm:XZG_main函数详细实现流程图
p639fkpsm:Cx330_小修小补
p639fkpsm:XZL_打印学生成绩
p639fkpsm:Cx330_统计各分数段的学生人数及所占的百分比
p639fkpsm:XZG_从文件中读取学生的学号，姓名，成绩等信息写入结构体stu中
p639fkpsm:XZG_交换法实现字符串按字典顺序排序
p639fkpsm:ZY_计算每门课程的总分和平均分
p639fkpsm:ZY_计算每个学生各门成绩的总分和平均分
p639fkpsm:XZG_按选择法将将数组num的元素值从低到高排序
p639fkpsm:ZY_显示菜单并获得输入选项
p639fkpsm:ZY_输入n个同学的m门成绩
p639fkpsm:XZL_输出n个学生的学号、姓名及m门课程的成绩到文件中
p639fkpsm:XZG_按选择法将数组sum的元素值排序
p639fkpsm:Cx330_按学号查找学生成绩并显示查找结果
p639fkpsm:XZL_交换两个字符串
p639fkpsm:XZL_交换两个长整型数据
p639fkpsm:XZL_交换两个单精度浮点型数据
p639fkpsm:XZL_使数据按降序排序
p639fkpsm:XZL_使数据按升序排序
p639fkpsm:Cx330_基本框架
p639fkpsm:Cx330_3
p639fkpsm:Cx330
..
compare: p639fkpsm:ZY-ReadfromFile
Branches Tags
p639fkpsm:master
p639fkpsm:XZG——伪代码2
p639fkpsm:XZG_伪代码
p639fkpsm:SearchbyNum
p639fkpsm:xzg_SortbyScore流程图
p639fkpsm:XZG_SortbyName流程图
p639fkpsm:XZG_AverSumofEveryCourse流程图
p639fkpsm:ZY-ReadfromFile
p639fkpsm:ZY-WritetoFile
p639fkpsm:XZL_StatisticAnalysis
p639fkpsm:ZY-PrintScore
p639fkpsm:XZG_AsScortbyNum流程图
p639fkpsm:XZL_SearchbyName
p639fkpsm:xzg_SortbyScore
p639fkpsm:Cx330_AverSumofEveryStudent
p639fkpsm:Cx330_ReadScore
p639fkpsm:XZG_main函数详细实现流程图
p639fkpsm:Cx330_小修小补
p639fkpsm:XZL_打印学生成绩
p639fkpsm:Cx330_统计各分数段的学生人数及所占的百分比
p639fkpsm:XZG_从文件中读取学生的学号，姓名，成绩等信息写入结构体stu中
p639fkpsm:XZG_交换法实现字符串按字典顺序排序
p639fkpsm:ZY_计算每门课程的总分和平均分
p639fkpsm:ZY_计算每个学生各门成绩的总分和平均分
p639fkpsm:XZG_按选择法将将数组num的元素值从低到高排序
p639fkpsm:ZY_显示菜单并获得输入选项
p639fkpsm:ZY_输入n个同学的m门成绩
p639fkpsm:XZL_输出n个学生的学号、姓名及m门课程的成绩到文件中
p639fkpsm:XZG_按选择法将数组sum的元素值排序
p639fkpsm:Cx330_按学号查找学生成绩并显示查找结果
p639fkpsm:XZL_交换两个字符串
p639fkpsm:XZL_交换两个长整型数据
p639fkpsm:XZL_交换两个单精度浮点型数据
p639fkpsm:XZL_使数据按降序排序
p639fkpsm:XZL_使数据按升序排序
p639fkpsm:Cx330_基本框架
p639fkpsm:Cx330_3
p639fkpsm:Cx330
pvfj5ugro:master
pvfj5ugro:XZG——伪代码2
pvfj5ugro:XZG_伪代码
pvfj5ugro:SearchbyNum
pvfj5ugro:xzg_SortbyScore流程图
pvfj5ugro:XZG_SortbyName流程图
pvfj5ugro:XZG_AverSumofEveryCourse流程图
pvfj5ugro:ZY-ReadfromFile
pvfj5ugro:ZY-WritetoFile
pvfj5ugro:XZL_StatisticAnalysis
pvfj5ugro:ZY-PrintScore
pvfj5ugro:XZG_AsScortbyNum流程图
pvfj5ugro:XZL_SearchbyName
pvfj5ugro:xzg_SortbyScore
pvfj5ugro:Cx330_AverSumofEveryStudent
pvfj5ugro:Cx330_ReadScore
pvfj5ugro:XZG_main函数详细实现流程图
pvfj5ugro:Cx330_小修小补
pvfj5ugro:XZL_打印学生成绩
pvfj5ugro:Cx330_统计各分数段的学生人数及所占的百分比
pvfj5ugro:XZG_从文件中读取学生的学号，姓名，成绩等信息写入结构体stu中
pvfj5ugro:XZG_交换法实现字符串按字典顺序排序
pvfj5ugro:ZY_计算每门课程的总分和平均分
pvfj5ugro:ZY_计算每个学生各门成绩的总分和平均分
pvfj5ugro:XZG_按选择法将将数组num的元素值从低到高排序
pvfj5ugro:ZY_显示菜单并获得输入选项
pvfj5ugro:ZY_输入n个同学的m门成绩
pvfj5ugro:XZL_输出n个学生的学号、姓名及m门课程的成绩到文件中
pvfj5ugro:XZG_按选择法将数组sum的元素值排序
pvfj5ugro:Cx330_按学号查找学生成绩并显示查找结果
pvfj5ugro:XZL_交换两个字符串
pvfj5ugro:XZL_交换两个长整型数据
pvfj5ugro:XZL_交换两个单精度浮点型数据
pvfj5ugro:XZL_使数据按降序排序
pvfj5ugro:XZL_使数据按升序排序
pvfj5ugro:Cx330_基本框架
pvfj5ugro:Cx330_3
pvfj5ugro:Cx330

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AsSortbyNum.svg
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<tspan x="2139" dy="62" unicode-bidi="embed">SwapFloat(&amp;stu[k].score[t], &amp;</tspan>
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<tspan x="1519" dy="62" unicode-bidi="embed">num)</tspan>
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<tspan x="1519" dy="62" unicode-bidi="embed">SwapChar(stu[k].name, stu</tspan>
<tspan x="1519" dy="62" unicode-bidi="embed">[i].name)</tspan>
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<tspan x="1271" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="697" y="2963" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="697" dy="62" unicode-bidi="embed">False</tspan>
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<text x="372" y="1382" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="372" dy="62" unicode-bidi="embed">i = 0 to n-2</tspan>
</text>
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<tspan x="713" dy="62" unicode-bidi="embed">Next</tspan>
</text>
<text x="263" y="1506" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="263" dy="62" unicode-bidi="embed">Done</tspan>
</text>
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</g>
</g>
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AverSumofEveryCourse.svg
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<tspan x="1736" dy="62" unicode-bidi="embed">[j]</tspan>
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<tspan x="1519" dy="62" unicode-bidi="embed">Next</tspan>
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<tspan x="1178" dy="62" unicode-bidi="embed">aver[j] = sum[i]/i</tspan>
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<tspan x="1178" dy="62" unicode-bidi="embed">Output &quot;course %d: sum =</tspan>
<tspan x="1178" dy="62" unicode-bidi="embed"> %.0f,aver = %.0f\n&quot;, j + 1,</tspan>
<tspan x="1178" dy="62" unicode-bidi="embed"> sum[j], aver[j]</tspan>
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<tspan x="837" dy="62" unicode-bidi="embed">Next</tspan>
</text>
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<tspan x="387" dy="62" unicode-bidi="embed">Done</tspan>
</text>
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</g>
</g>
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README.md
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@ -423,85 +423,39 @@ Step 2：利用循环，输入学生的学号，成绩和各科成绩
Step 1:利用for循环给 sum 赋初值为 0 Step 1:利用for循环给 sum 赋初值为 0
Step 2:利用第二重循环重新计算每个学生的总分 Step 2:利用第二重循环重新计算每个学生的总分
Step 3:计算每个学生的平均分 Step 3:计算每个学生的平均分
Step 4:将结果按照顺序，总分和平均分的顺序进行输出 Step 4:将结果按照舒徐，总分和平均分的顺序进行输出
![计算每个学生各门课程的总分和平均分](AverSumofEveryStudent.svg) ![计算每个学生各门课程的总分和平均分](AverSumofEveryStudent.svg)
#### AverSumofEveryCourse #### AverSumofEveryCourse
Step 1:利用for循环给 sum 赋初值为 0
Step 2:利用第二重循环重新计算每门课程的总分
Step 3:计算每门课程的平均分
Step 4:将结果按照顺序，总分和平均分的顺序进行输出
![计算每门课程的总分和平均分](AverSumofEveryCourse.svg)
#### SortbyScore #### SortbyScore
Step 1:利用循环将i赋值给k #### SortbyScore
Step 2:用循环从i+1到n-1比较,将较小的赋给k
Step 3:如果k与i不相等，每一课的成绩交换
Step 4:总分，平均分，学号，姓名依次交换
![按选择法将数组 sum 的元素值排序](SortbyScore.svg)
#### AsSortbyNum #### AsSortbyNum
Step 1:利用循环将i赋值给k
Step 2:用循环从i+1到n-1比较,将较小的学号赋给k
Step 3:如果k与i不相等，每一课的成绩交换
Step 4:总分，平均分，学号，姓名依次交换
![按选择法将数组 num 的元素从低到高排序](AsSortbyNum.svg)
#### SortbyName #### SortbyName
Step 1:利用for循环将相邻的两个姓名作比较
Step 2:如果前一个字符串大于后一个，利用for循环交换m门课程的成绩
Step 3:依次交换
![交换法实现字符串按字典顺序排序](SortbyName.svg)
#### SearchbyNum #### SearchbyNum
Step 1:利用for循环给 i 赋值为 0
Step 2:利用 if 条件判断学号是否一致
Step 3:利用二次循环找出所有符合条件的学生
Step 4:利用if条件语句能否找到该学生
![按学号查找学生成绩并显示查找结果](SearchbyNum.svg)
#### SearchbyName #### SearchbyName
Step 1:利用for循环给 i 赋值为 0
Step 2:利用 if 条件和循环判断是否有此学生并显示结果
![按姓名查找学生成绩并显示查找结果](SearchbyName.svg)
#### StatisticAnalysis #### StatisticAnalysis
Step 1:将数组 t 的全部元素初始化为0
Step 2:利用循环和if条件统计各分数段学生人数
Step 3:利用循环和if条件统计各分数段学生所占比结果
![统计各分数段的学生人数及所占的百分比](StatisticAnalysis.svg)
#### PrintScore #### PrintScore
Step 1:利用for循环输出学生的学号和姓名 Step 1:利用for循环输出学生的学号和姓名
Step 2:利用二次循环输出每位学生的成绩 Step 2:利用二次循环输出每位学生的成绩
Step 3:输出学生的总分数和平均分 Step 3:输出学生的总分数和平均分
![打印学生成绩](PrintScore.svg) ![打印学生成绩](PrintScore.svg)
#### WritetoFile #### WritetoFile
Step 1:读取文件输出学生人数和课程门数 Step 1:读取文件输出学生人数和课程门数
Step 2:利用循环for依次输出学生学号和姓名 Step 2:利用循环for依次输出学生学号和姓名
Step 3:利用二次循环输出学生成绩 Step 3:利用二次循环输出学生成绩
Step 4:输出总成绩和平均分 Step 4:输出总成绩和平均分
![输出n个学生的学号，姓名以及m门课程的成绩](-WritetoFile.svg) ![输出n个学生的学号，姓名以及m门课程的成绩](WritetoFile.svg)
#### ReadfromFile #### ReadfromFile
Step 1:从文件中读取学生人数和课门数 Step 1:从文件中读取学生人数和课门数
Step 2:利用循环for输入学生学号和姓名 Step 2:利用循环for输入学生学号和姓名
@ -572,7 +526,7 @@ int main(void)
int n = 0,m = 0; int n = 0,m = 0;
STU stu[STU_NUM]; STU stu[STU_NUM];
printf("Input student number(n<%d):",STU_NUM); printf("Input student number(n<%d):",STU_NUM);
scanf("%d",&n); scnaf("%d",&n);
printf("Input course number(m<=%d):",COURSE_NUM); printf("Input course number(m<=%d):",COURSE_NUM);
scanf("%d",&m); scanf("%d",&m);
while(1) while(1)
@ -615,7 +569,7 @@ int main(void)
case 13:ReadfromFile(stu,&n,&m); case 13:ReadfromFile(stu,&n,&m);
break; break;
case 0: printf("Are you sure you want to exit?(Y/N):"); case 0: printf("Are you sure you want to exit?(Y/N):");
printf("End of program!"); printf("End of program!);
exit(0); exit(0);
default:printf("Input error!"); default:printf("Input error!");
} }
@ -628,305 +582,351 @@ int main(void)
``` ```
int Menu(void) int Menu(void)
{ {
set itemSelected int itemSelected;
printf "Management for Students' scores\n" printf("Management for Students' scores\n");
printf "1 Input record\n" printf("1 Input record\n");
printf "2 Calculate total and average score of every course\n" printf("2 Calculate total and average score of every course\n");
printf "3 Calculate total and average score of every student\n" printf("3 Calculate total and average score of every student\n");
printf "4 Sort in descending order by score\n" printf("4 Sort in descending order by score\n");
printf "5 Sort in ascending order by score\n" printf("5 Sort in ascending order by score\n");
printf "6 Sort in ascending order by number\n" printf("6 Sort in ascending order by number\n");
printf "7 Sort in dictionary order by name\n" printf("7 Sort in dictionary order by name\n");
printf "8 Search by number\n" printf("8 Search by number\n");
printf "9 Search by name\n" printf("9 Search by name\n");
printf "10 Statistic analysis\n" printf("10 Statistic analysis\n");
printf "11 List record\n" printf("11 List record\n");
printf "12 Write to a file\n" printf("12 Write to a file\n");
printf "13 Read from a file\n" printf("13 Read from a file\n");
printf "0 Exit\n" printf("0 Exit\n");
printf "Please Input your choice:" printf("Please Input your choice:");
input itemSelected //读入用户输入 scanf("%d",&itemSelected); //读入用户输入
return itemSelected return itemSelected;
} }
``` ```
// 函数功能：输入 n 个学生的 m 门课成绩 // 函数功能：输入 n 个学生的 m 门课成绩
``` ```
function ReadScore(STU stu[],int n,int m) do void ReadScore(STU stu[],int n,int m)
{
int i,j; int i,j;
printf "Input student's ID ,name and score:\n" printf("Input student's ID ,name and score:\n");
for from i=0 to n-1 do //输入n个同学 for(i=0,i<n;i++) //输入n个同学
{
input stu[i].num,stu[i].name scanf("%ld%s",&stu[i].num,stu[i].name);
for form j=0 to m-1 do //输入m门成绩 for(j=0;j<m;j++) //输入m门成绩
input stu[i].score[j] scanf("%f",&stu[i].score[j]);
end }
end }
end
``` ```
//函数功能：计算每个学生各门课程的总分和平均分 //函数功能：计算每个学生各门课程的总分和平均分
``` ```
function AverSumofEveryStudent(STU stu[],int n,int m) do void AverSumofEveryStudent(STU stu[],int n,int m)
{
int i,j; int i,j;
for form i=0 to n-1 do for(i=0;i<n;i++)
{
stu[i].sum = 0; //初始化每个学生总分为0 stu[i].sum = 0; //初始化每个学生总分为0
for from j=0 to m-1 do for(j=0;j<m;j++)
{
stu[i].sum = stu[i].sum + stu[i].score[j]; //累加分数 stu[i].sum = stu[i].sum + stu[i].score[j]; //累加分数
end }
stu[i].aver = m>0 ? stu[i].sum /m : -1; stu[i].aver = m>0 ? stu[i].sum /m : -1;
printf "student %d: sum = %.0f,aver = %.0f\n" printf("student %d: sum = %.0f,aver = %.0f\n",i+1,stu[i].sum,stu[i].aver);
end }
end }
``` ```
//函数功能：计算每门课程的总分和平均分 //函数功能：计算每门课程的总分和平均分
``` ```
function AverSumofEveryCourse(STU stu[],int n,int m) do void AverSumofEveryCourse(STU stu[],int n,int m)
{
int i,j; int i,j;
float sum[COURSE_NUM],aver[COURSE_NUM]; float sum[COURSE_NUM],aver[COURSE_NUM];
for from j=0 to m-1 do for(j=0;j<m;j++)
{
sum[j] = 0; sum[j] = 0;
for from i=0 to n-1 do for(i=0;i<n;i++)
{
sum[j]+= stu[i].score[j]; //计算n个同学每门课程的总分 sum[j]+= stu[i].score[j]; //计算n个同学每门课程的总分
end
}
aver[j] = sum[j]/i; aver[j] = sum[j]/i;
printf "course %d: sum = %.0f,aver = %.0f\n" printf("course %d: sum = %.0f,aver = %.0f\n",j+1, sum[j], aver[j]);
end }
end }
``` ```
//函数功能：按选择法将数组 sum 的元素值排序 //函数功能：按选择法将数组 sum 的元素值排序
``` ```
function SortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b)) do voidSortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b))
{
int i, j, k, t; int i, j, k, t;
for from i=0 to n-2 do for (i=0; i<n-1; i++)
{
k = i; k = i;
for from i+1 to n-1 do for (j=i+1; j<n; j++)
if (*compare)(stu[j].sum, stu[k].sum) set k = j; {
end if ((*compare)(stu[j].sum, stu[k].sum)) k = j;
if k != i }
for from t=0 to m-1 do //交换m门课程的成绩 if (k != i)
{
for (t=0; t<m; t++) //交换m门课程的成绩
{
SwapFloat(&stu[k].score[t], &stu[i].score[t]); SwapFloat(&stu[k].score[t], &stu[i].score[t]);
end }
SwapFloat(&stu[k].sum, &stu[i].sum); //交换总分 SwapFloat(&stu[k].sum, &stu[i].sum); //交换总分
SwapFloat(&stu[k].aver, &stu[i].aver); //交换平均分 SwapFloat(&stu[k].aver, &stu[i].aver); //交换平均分
SwapLong(&stu[k].num, &stu[i].num); //交换学号 SwapLong(&stu[k].num, &stu[i].num); //交换学号
SwapChar(stu[k].name, stu[i].name); //交换姓名 SwapChar(stu[k].name, stu[i].name); //交换姓名
end }
end }
end }
``` ```
//使数据按升序排序 //使数据按升序排序
``` ```
function Ascending(float a,float b) do int Ascending(float a,float b)
{
return a < b; //这样比较决定了按升序排序，如果a<b，则交换 return a < b; //这样比较决定了按升序排序，如果a<b，则交换
end }
``` ```
//使数据按降序排序 //使数据按降序排序
``` ```
function Descending(float a,float b) do int Descending(float a,float b)
{
return a > b; // 这样比较决定了按降序排序，如果 a>b，则交换 return a > b; // 这样比较决定了按降序排序，如果 a>b，则交换
end }
``` ```
//交换两个单精度浮点型数据 //交换两个单精度浮点型数据
``` ```
function SwapFloat(float *x,float *y) do void SwapFloat(float *x,float *y)
{
float temp; float temp;
temp = *x; temp = *x;
*x = *y; *x = *y;
*y = temp; *y = temp;
end }
``` ```
//交换两个长整型数据 //交换两个长整型数据
``` ```
function SwapLong(long *x,long *y) do void SwapLong(long *x,long *y)
{
long temp; long temp;
temp = *x; temp = *x;
*x = *y; *x = *y;
*y = temp; *y = temp;
end }
``` ```
//交换两个字符串 //交换两个字符串
``` ```
function SwapChar(char x[],char y[]) do void SwapChar(char x[],chary[])
{
char temp[MAX_LEN]; char temp[MAX_LEN];
strcpy(temp, x); strcpy(temp, x);
strcpy(x, y); strcpy(x, y);
strcpy(y, temp); strcpy(y, temp);
end }
``` ```
//函数功能：按选择法将数组 num 的元素从低到高排序 //函数功能：按选择法将数组 num 的元素从低到高排序
``` ```
function AsSortbyNum(STU stu[],int n,int m) do void AsSortbyNum(STU stu[],int n,int m)
{
int i, j, k, t; int i, j, k, t;
for from i=0 to n-2 do for (i=0; i<n-1; i++)
{
int i, j, k, t; int i, j, k, t;
set k = i; k = i;
for from j=i+1 to n-1 do for (j=i+1; j<n; j++)
if stu[j].num < stu[k].num set k = j; {
end if (stu[j].num < stu[k].num) k = j;
if k != i do }
for from t=0 to m-1 do //交换m门课程的成绩 if (k != i)
{
for (t=0; t<m; t++) //交换m门课程的成绩
{
SwapFloat(&stu[k].score[t], &stu[i].score[t]); SwapFloat(&stu[k].score[t], &stu[i].score[t]);
end }
SwapFloat(&stu[k].sum, &stu[i].sum); //交换总分 SwapFloat(&stu[k].sum, &stu[i].sum); //交换总分
SwapFloat(&stu[k].aver, &stu[i].aver); //交换平均分 SwapFloat(&stu[k].aver, &stu[i].aver); //交换平均分
SwapLong(&stu[k].num, &stu[i].num); //交换学号 SwapLong(&stu[k].num, &stu[i].num); //交换学号
SwapChar(stu[k].name, stu[i].name); //交换姓名 SwapChar(stu[k].name, stu[i].name); //交换姓名
end }
end }
end }
``` ```
//函数功能：交换法实现字符串按字典顺序排序 //函数功能：交换法实现字符串按字典顺序排序
``` ```
function SortbyName(STU stu[],int n,int m) do void SortbyName(STU stu[],int n,int m)
{
int i, j, t; int i, j, t;
for from i=0 to n-2 do for (i=0; i<n-1; i++)
for from j = i+1 to n-1 do {
if strcmp(stu[j].name, stu[i].name) < 0 do for (j = i+1; j<n; j++)
for from t=0 to m-1 do //交换m门课程的成绩 {
if (strcmp(stu[j].name, stu[i].name) < 0)
{
for (t=0; t<m; t++) //交换m门课程的成绩
{
SwapFloat(&stu[i].score[t], &stu[j].score[t]); SwapFloat(&stu[i].score[t], &stu[j].score[t]);
end }
SwapFloat(&stu[i].sum, &stu[j].sum); //交换总分 SwapFloat(&stu[i].sum, &stu[j].sum); //交换总分
SwapFloat(&stu[i].aver, &stu[j].aver); //交换平均分 SwapFloat(&stu[i].aver, &stu[j].aver); //交换平均分
SwapLong(&stu[i].num, &stu[j].num); //交换学号 SwapLong(&stu[i].num, &stu[j].num); //交换学号
SwapChar(stu[i].name, stu[j].name); //交换姓名 SwapChar(stu[i].name, stu[j].name); //交换姓名
end }
end }
end }
end }
``` ```
//函数功能：按学号查找学生成绩并显示查找结果 //函数功能：按学号查找学生成绩并显示查找结果
``` ```
function SearchbyNum(STU stu[],int n,int m) do void SearchbyNum(STU stu[],int n,int m)
{
long number; long number;
int i,j; int i,j;
printf"Input the number you want to search:" printf("Input the number you want to search:");
input number scanf("%ld",&number);
forfrom i=0 to n-1 do for(i=0;i<n;i++)
if stu[i].num==number do if(stu[i].num==number)
printf"\n" {
for from j=0 to m-1 do printf("\n");
printf "%d\t" for(j=0;j<m;j++)
printf "\n" printf("%d\t",stu[i].score[j]);
printf("\n");
break; break;
end }
if i==n if(i==n)
printf "\nNot found!\n" printf("\nNot found!\n");
end }
``` ```
//函数功能：按姓名查找学生成绩并显示查找结果 //函数功能：按姓名查找学生成绩并显示查找结果
``` ```
function SearchbyName(STU stu[],int n,int m) do void SearchbyName(STU stu[],int n,int m)
{
char x[MAX_LEN]; char x[MAX_LEN];
int i,j; int i,j;
printf "Input the name you want to search:" printf("Input the name you want to search:");
input x scanf("%s", x);
for from i=0 to n-1 do for(i=0;i<n;i++)
if strcmp(stu[i].name,x)==0 do {
printf "%ld\t%s\t",stu[i].num,stu[i].name" if(strcmp(stu[i].name,x)==0)
for from j=0 to m-1 do {
printf "%.0f\t" printf("%ld\t%s\t",stu[i].num,stu[i].name);
end for(j=0;j<m;j++)
printf ".0f\t%.0f\n" {
printf("%.0f\t",stu[i].score[j]);
}
printf(".0f\t%.0f\n",stu[i].sum,stu[i].aver);
return; return;
end }
end }
printf "\nNot found!\n" printf("\nNot found!\n);
end }
``` ```
//函数功能：统计各分数段的学生人数及所占的百分比 //函数功能：统计各分数段的学生人数及所占的百分比
``` ```
funtion StatisticAnalysis(STU stu[],int n,int m) do void StatisticAnalysis(STU stu[],int n,int m)
{
int i,j,t[6]; int i,j,t[6];
for from j=0 do m-1 do for(j=0;j<m;j++)
printf "For course %d:\n" {
printf("For course %d:\n",j+1);
memset(t,0,sizeof(t)); //将数组 t 的全部元素初始化为0 memset(t,0,sizeof(t)); //将数组 t 的全部元素初始化为0
for from i=0 to n-1 do for(i=0;i<n;i++)
if stu[i].score[j]>=0&&stu[i].score[j]<60 set t[0]++ {
else if stu[i].score[j]<70 set t[1]++; if(stu[i].score[j]>=0&&stu[i].score[j]<60) t[0]++;
else if stu[i].score[j]<80 set t[2]++; else if(stu[i].score[j]<70) t[1]++;
else if stu[i].score[j]<90 set t[3]++; else if(stu[i].score[j]<80) t[2]++;
else if stu[i].score[j]<100 set t[4]++; else if(stu[i].score[j]<90) t[3]++;
else if stu[i].score[j]==100 set t[5]++; else if(stu[i].score[j]<100) t[4]++;
end else if(stu[i].score[j]==100) t[5]++;
for from i=0 to 4 do }
if i==0 printf "<60\t%d\t%.2f%%\n" for(i=0;i<=5;i++)
else if i==5 printf "%d\t%d\t%.2f%%\n" {
else printf "%d-%d\t%d\t%.2f%%\n" if(i==0) printf("<60\t%d\t%.2f%%\n",t[i],(float)t[i]/n*100);
end else if(i==5) printf("%d\t%d\t%.2f%%\n",(i+5)*10,t[i],(float)t[i]/n*100);
end else printf("%d-%d\t%d\t%.2f%%\n",(i+5)*10,(i+5)*10+9,t[i],(float)t[i]/n*100);
end }
}
}
``` ```
//函数功能：打印学生成绩 //函数功能：打印学生成绩
``` ```
function PrintScore(STU stu[],int n,int m) do void PrintScore(STU stu[],int n,int m)
{
int i,j; int i,j;
for from i=0 to n-1 do for (i=0; i<n; i++)
printf "%ld\t%s\t" {
for from j=0 to m-1 do printf("%ld\t%s\t", stu[i].num, stu[i].name);
printf "%.0f\t" for (j=0; j<m; j++)
end {
printf "%.0f\t%.0f\n" printf("%.0f\t", stu[i].score[j]);
end }
end printf("%.0f\t%.0f\n", stu[i].sum, stu[i].aver);
}
}
``` ```
//输出 n 个学生的学号、姓名及 m 门课程的成绩到文件 student.txt 中 //输出 n 个学生的学号、姓名及 m 门课程的成绩到文件 student.txt 中
``` ```
function WritetoFile(STU stu[],int n,int m) do void WritetoFile(STU stu[],int n,int m)
{
FILE *fp; FILE *fp;
int i, j; int i, j;
if fp = fopen("student.txt","w") == NULL do if((fp = fopen("student.txt","w")) == NULL)
printf "Failure to open score.txt!\n" {
printf("Failure to open score.txt!\n");
exit(0); exit(0);
end }
fprintf(fp, "%d\t%d\n", n, m); //将学生人数和课程门数写入文件 fprintf(fp, "%d\t%d\n", n, m); //将学生人数和课程门数写入文件
for from i=0 to n-1 do for (i=0; i<n; i++)
{
fprintf(fp, "%10ld%10s", stu[i].num, stu[i].name); fprintf(fp, "%10ld%10s", stu[i].num, stu[i].name);
for from j=0 to m-1 do for (j=0; j<m; j++)
{
fprintf(fp, "%10.0f", stu[i].score[j]); fprintf(fp, "%10.0f", stu[i].score[j]);
end }
fprintf(fp, "%10.0f%10.0f\n", stu[i].sum, stu[i].aver); fprintf(fp, "%10.0f%10.0f\n", stu[i].sum, stu[i].aver);
end }
fclose(fp); fclose(fp);
end }
``` ```
//从文件中读取学生的学号、姓名及成绩等信息写入到结构体 stu 中 //从文件中读取学生的学号、姓名及成绩等信息写入到结构体 stu 中
``` ```
function ReadfromFile(STU stu[],int *n,int *m) do void ReadfromFile(STU stu[],int *n,int *m)
{
FILE *fp; FILE *fp;
int i, j; int i, j;
if fp = fopen("student.txt","r") == NULL do if ((fp = fopen("student.txt","r")) == NULL)
printf "Failure to open score.txt!\n" {
printf("Failure to open score.txt!\n");
exit(0); exit(0);
end }
fscanf(fp, "%d\t%d", n, m); //从文件中读出学生人数，课程门数 fscanf(fp, "%d\t%d", n, m); //从文件中读出学生人数，课程门数
for from i=0 to *n-1 do //学生人数保存在n指向的储存单元 for (i=0; i<*n; i++) //学生人数保存在n指向的储存单元
{
fscanf(fp, "%10ld", &stu[i].num); fscanf(fp, "%10ld", &stu[i].num);
fscanf(fp, "%10s", stu[i].name); fscanf(fp, "%10s", stu[i].name);
for form j=0 to *m-1 do //课程门数保存在m指向的储存单元 for (j=0; j<*m; j++) //课程门数保存在m指向的储存单元
{
fscanf(fp, "%10f", &stu[i].score[j]); //不能用%10.0f fscanf(fp, "%10f", &stu[i].score[j]); //不能用%10.0f
end }
fscanf(fp, "%10f%10f", &stu[i].sum, &stu[i].aver); //不能用%10.0f fscanf(fp, "%10f%10f", &stu[i].sum, &stu[i].aver); //不能用%10.0f
end }
fclose(fp); fclose(fp);
end }
``` ```

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<tspan x="2945" dy="62" unicode-bidi="embed">SwapFloat(&amp;stu[i].score[t], &amp;</tspan>
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<tspan x="2356" dy="62" unicode-bidi="embed">sum)</tspan>
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<text x="1147" y="1289" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
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StatisticAnalysis.svg
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<text x="2015" y="3800" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2015" dy="62" unicode-bidi="embed">stu[i].score[j] &lt; 80</tspan>
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<g>
<path fill="#FFFFD0" stroke="#A0A070" stroke-width="4" stroke-dasharray="none" d="M 2325,4061 L 2325,4185 L 2697,4185 L 2697,4061 Z"/>
<text x="2511" y="4079" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2511" dy="62" unicode-bidi="embed">t[2] = t[2]+1</tspan>
</text>
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<g>
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<ellipse cx="2015" cy="4309" rx="31" ry="31" fill="#C04040" stroke="#602020" stroke-width="4"/>
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<tspan x="2418" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="1596" y="3738" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1596" dy="62" unicode-bidi="embed">False</tspan>
</text>
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<text x="2015" y="4544" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2015" dy="62" unicode-bidi="embed">stu[i].score[j] &lt; 90</tspan>
</text>
</g>
<g>
<path fill="#FFFFD0" stroke="#A0A070" stroke-width="4" stroke-dasharray="none" d="M 2325,4805 L 2325,4929 L 2697,4929 L 2697,4805 Z"/>
<text x="2511" y="4823" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2511" dy="62" unicode-bidi="embed">t[3] = t[3]+1</tspan>
</text>
</g>
<g>
</g>
<ellipse cx="2015" cy="5053" rx="31" ry="31" fill="#C04040" stroke="#602020" stroke-width="4"/>
<text x="2418" y="4482" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2418" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="1596" y="4482" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1596" dy="62" unicode-bidi="embed">False</tspan>
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<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="1705,5363 1457,5363 1457,5859 1966,5859"/>
<polygon fill="#404040" stroke="none" points="1984,5859 1953,5841 1953,5876"/>
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<path fill="#C04040" stroke="#602020" stroke-width="4" stroke-dasharray="none" d="M 2015,5177 L 1674,5363 L 2015,5549 L 2356,5363 Z"/>
<text x="2015" y="5319" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2015" dy="62" unicode-bidi="embed">stu[i].score[j] &lt; 100</tspan>
</text>
</g>
<g>
<path fill="#FFFFD0" stroke="#A0A070" stroke-width="4" stroke-dasharray="none" d="M 2356,5611 L 2356,5735 L 2728,5735 L 2728,5611 Z"/>
<text x="2542" y="5629" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2542" dy="62" unicode-bidi="embed">t[4] = t[4]+1</tspan>
</text>
</g>
<g>
</g>
<ellipse cx="2015" cy="5859" rx="31" ry="31" fill="#C04040" stroke="#602020" stroke-width="4"/>
<text x="2449" y="5257" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2449" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="1565" y="5257" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1565" dy="62" unicode-bidi="embed">False</tspan>
</text>
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<g>
<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="2325,6169 2542,6169 2542,6399"/>
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<polygon fill="#FF8040" stroke="none" points="1984,6665 1953,6647 1953,6682"/>
<g>
<path fill="#C04040" stroke="#602020" stroke-width="4" stroke-dasharray="none" d="M 2015,5983 L 1674,6169 L 2015,6355 L 2356,6169 Z"/>
<text x="2015" y="6125" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2015" dy="62" unicode-bidi="embed">stu[i].score[j] == 100</tspan>
</text>
</g>
<g>
<path fill="#FFFFD0" stroke="#A0A070" stroke-width="4" stroke-dasharray="none" d="M 2356,6417 L 2356,6541 L 2728,6541 L 2728,6417 Z"/>
<text x="2542" y="6435" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2542" dy="62" unicode-bidi="embed">t[5] = t[5]+1</tspan>
</text>
</g>
<g>
</g>
<ellipse cx="2015" cy="6665" rx="31" ry="31" fill="#C04040" stroke="#602020" stroke-width="4"/>
<text x="2449" y="6063" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2449" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="1565" y="6063" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1565" dy="62" unicode-bidi="embed">False</tspan>
</text>
</g>
</g>
<g>
<path fill="#FFE0A0" stroke="#A08040" stroke-width="4" stroke-dasharray="none" d="M 899,1829 L 837,1891 L 899,1953 L 1271,1953 L 1333,1891 L 1271,1829 Z"/>
<text x="1085" y="1847" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1085" dy="62" unicode-bidi="embed">i = 0 to n-1</tspan>
</text>
</g>
<text x="1426" y="1785" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1426" dy="62" unicode-bidi="embed">Next</tspan>
</text>
<text x="976" y="1971" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="976" dy="62" unicode-bidi="embed">Done</tspan>
</text>
</g>
<g>
<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="1302,7006 3255,7006 3255,7112"/>
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<polygon fill="#404040" stroke="none" points="1147,7068 1129,7098 1164,7098"/>
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<polygon fill="#404040" stroke="none" points="3751,7378 3768,7347 3733,7347"/>
<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="3751,7502 3751,8091 3303,8091"/>
<polygon fill="#404040" stroke="none" points="3286,8091 3316,8108 3316,8073"/>
<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="3100,7223 2263,7223 2263,7360"/>
<polygon fill="#404040" stroke="none" points="2263,7378 2280,7347 2245,7347"/>
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<polygon fill="#404040" stroke="none" points="3224,8091 3193,8073 3193,8108"/>
<g>
<path fill="#FFD0D0" stroke="#A07070" stroke-width="4" stroke-dasharray="none" d="M 3255,7130 L 3069,7223 L 3255,7316 L 3441,7223 Z"/>
<text x="3255" y="7179" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="3255" dy="62" unicode-bidi="embed">i == 0</tspan>
</text>
</g>
<g>
<path fill="#C04040" stroke="#602020" stroke-width="4" stroke-dasharray="none" d="M 3379,7378 L 3317,7502 L 4123,7502 L 4185,7378 Z"/>
<text x="3751" y="7396" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="3751" dy="62" unicode-bidi="embed">Output &lt;60\t%d\t%.2f%%\n</tspan>
</text>
</g>
<g>
<polyline fill="none" stroke="#404040" stroke-width="8" stroke-dasharray="none" points="2418,7471 2759,7471 2759,7608"/>
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<g>
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<text x="2263" y="7427" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2263" dy="62" unicode-bidi="embed">i==5</tspan>
</text>
</g>
<g>
<path fill="#C04040" stroke="#602020" stroke-width="4" stroke-dasharray="none" d="M 2387,7626 L 2325,7750 L 3131,7750 L 3193,7626 Z"/>
<text x="2759" y="7644" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2759" dy="62" unicode-bidi="embed">Output %d\t%d\t%.2f%%\n</tspan>
</text>
</g>
<g>
<path fill="#C04040" stroke="#602020" stroke-width="4" stroke-dasharray="none" d="M 1426,7626 L 1333,7812 L 2108,7812 L 2201,7626 Z"/>
<text x="1767" y="7644" fill="#FFFFFF" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1767" dy="62" unicode-bidi="embed">Output %d-%d\t%d\t%.2f</tspan>
<tspan x="1767" dy="62" unicode-bidi="embed">%%\n</tspan>
</text>
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<text x="2542" y="7365" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2542" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="1968" y="7365" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1968" dy="62" unicode-bidi="embed">False</tspan>
</text>
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<ellipse cx="3255" cy="8091" rx="31" ry="31" fill="#FFD0D0" stroke="#A07070" stroke-width="4"/>
<text x="3534" y="7117" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="3534" dy="62" unicode-bidi="embed">True</tspan>
</text>
<text x="2960" y="7117" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="2960" dy="62" unicode-bidi="embed">False</tspan>
</text>
</g>
<g>
<path fill="#FFE0A0" stroke="#A08040" stroke-width="4" stroke-dasharray="none" d="M 930,6944 L 868,7006 L 930,7068 L 1240,7068 L 1302,7006 L 1240,6944 Z"/>
<text x="1085" y="6962" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1085" dy="62" unicode-bidi="embed">i = 0 to 5</tspan>
</text>
</g>
<text x="1395" y="6900" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="1395" dy="62" unicode-bidi="embed">Next</tspan>
</text>
<text x="976" y="7086" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="976" dy="62" unicode-bidi="embed">Done</tspan>
</text>
</g>
</g>
<g>
<path fill="#FFE0A0" stroke="#A08040" stroke-width="4" stroke-dasharray="none" d="M 310,1178 L 248,1240 L 310,1302 L 682,1302 L 744,1240 L 682,1178 Z"/>
<text x="496" y="1196" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="496" dy="62" unicode-bidi="embed">j = 0 to m-1</tspan>
</text>
</g>
<text x="837" y="1134" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="837" dy="62" unicode-bidi="embed">Next</tspan>
</text>
<text x="387" y="1320" fill="#000000" font-family="Arial" font-size="32pt" text-anchor="middle" direction="ltr">
<tspan x="387" dy="62" unicode-bidi="embed">Done</tspan>
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