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@ -829,104 +829,123 @@ 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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