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#include <stdio.h>
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#include <string.h>
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#pragma warning (disable:4996)
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typedef struct Student
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{
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char id[20];
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char clas[20];
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char name[20];
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double score1;
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double score2;
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double score3;
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double score;
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}Student;
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Student stu[50]={{"10001","11","Zhang",99.5,88.5,89.5,277.5},{"10002","12","Yang",77.9,56.5,87.5,221.9},{"10003","11","Liang",92.5,99.0,60.5,252.0}};
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void start()
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{
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printf("\n以下为主菜单：\n");
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printf(" 1.input\n");
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printf(" 2.delete\n");
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printf(" 3.select\n");
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printf(" 4.order\n");
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printf(" 5.output\n");
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printf(" 6.quit\n");
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printf("please input your option：\n");
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}//开始显示主菜单的函数
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void input()
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{ int i;int flag=1;
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int len=lens(stu);
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scanf("%s %s %s %lf %lf %lf", stu[len].id,stu[len].clas,&stu[len].name,&stu[len].score1, &stu[len].score2, &stu[len].score3);
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char nul3=getchar();
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stu[len].score = stu[len].score1 + stu[len].score2 + stu[len].score3;
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for(i=0;i<len;i++)
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{
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if(strcmp(stu[len].id,stu[i].id)==0)
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{
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flag=0;
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stu[i]=stu[len];
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}
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}
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if(flag==1)
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{
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for( i=0;i<len;i++)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n",stu[i].id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score);
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}
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}
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if(flag==0)
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{
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for( i=0;i<len;i++)
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{
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if((strcmp(stu[len].id,stu[i].id)==0))
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printf("%s %s %s %.2f %.2f %.2f %.2f\n",stu[i].id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score);
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else if((strcmp(stu[len].id,stu[i].id)!=0))
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printf("%s %s %s %.2f %.2f %.2f %.2f\n",stu[i].id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score);
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}
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stu[len].id[0] ='0';
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stu[len].id[1] ='0';
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stu[len].id[2] ='0';
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stu[len].id[3] ='0';
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stu[len].id[4] ='0';
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stu[len].score1=0;
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stu[len].score2=0;
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stu[len].score3=0;
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stu[len].score = 0;
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}
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} //向新的空间输入或者可以在输入id相同时对前面的数据修改
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void output()
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{
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int len=lens(stu);
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double temp;
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int i,j;
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for (i = 0; i < 2; i++)
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{
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for (j = 0; j < 2 - i; j++)
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{
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if (stu[j].score > stu[j + 1].score)
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{
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Student temp = stu[j];
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stu[j] = stu[j + 1];
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stu[j + 1] = temp;
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}
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}
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}
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for( i=0;i<len;i++)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n",stu[i].id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score);
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}
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} //按总分从小到大输出
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int lens(Student stu[])
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{
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int i;
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int court = 0;
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for (i = 0;i < 50;i++)
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{
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if (stu[i].score3 > 0)
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{
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court++;
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}
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if(stu[i].score3 <= 0)
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{
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break;
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}
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}
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return court;
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} //测学生数量
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void order()
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{
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int i,j,k;
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int a[100] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
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int c[100] = { 0 };
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int number = 0;
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int len = lens(stu);
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for (i = 0;i < len;i++)
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{
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stu[i].score = stu[i].score1 + stu[i].score2 + stu[i].score3;
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}
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stu[len + 1].score = 0;
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for (i = 0;i < len;i++)
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{
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for (j = 0;j < len - i-1;j++)
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{
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if (strcmp(stu[j].clas, stu[j + 1].clas) > 0)
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{
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stu[len + 1] = stu[j];
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stu[j] = stu[j + 1];
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stu[j + 1] =stu[len + 1];
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}
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}
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}
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stu[len].score = 6458;
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for (i = 0;i < len;i++)
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{
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if (stu[i].score == stu[i + 1].score)
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{
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a[number]++;
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}
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if (stu[i].score != stu[i + 1].score)
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{
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a[number]++;
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c[number + 1] = i + 1;
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number++;
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}
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}
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for (k = 0;k < number;k++)
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{
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for (i = 0;i < a[k];i++)
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{
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for (j = c[k];j < a[k] - i;j++)
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{
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if (stu[j].score < stu[j + 1].score)
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{
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stu[len + 1] = stu[j];
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stu[j] = stu[j + 1];
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stu[j + 1] = stu[len + 1];
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}
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}
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}
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}
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for (i = 0;i < len;i++)
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{
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printf("%s %s %.2f %.2f %.2f %.2f\n", stu[i].id, stu[i].clas, stu[i].score1, stu[i].score2, stu[i].score3, stu[i].score);
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}
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} //先按班级再按成绩排序
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void delete()
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{
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int len = lens(stu);int flag = 0;
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int i,j,k;
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printf("请输入要删除学生的学号或者姓名：\n");
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char a[10];//用来储存学号或者名字
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scanf("%s", a);
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char nul2=getchar();
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for (i = 0;i < len;i++)
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{
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if (strcmp(a, stu[i].id) == 0 || strcmp(a, stu[i].name) == 0)
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{
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flag = 1;//有的话删除并输出
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for (k = i + 1;k < len;k++)
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{
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stu[k - 1] = stu[k];//相当于删除
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}
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}
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}
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if (flag == 0)//没有的话输出原来的数据
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{
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for (j = 0;j < len;j++)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id,stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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if (flag == 1)//有的话输出这个之外的（已删除这个学生）
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{
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len = lens(stu) - 1;
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for (j = 0;j < len;j++)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id,stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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} //删除
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void select(char* a,char* b,int i,double k)
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{
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int len = lens(stu),j;
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if (i == 1)
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{
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for (j = 0;j < len;j++)
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{
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if (strcmp(stu[j].clas,a)>=0 && strcmp(stu[j].clas,b)<=0)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id, stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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}
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else if (i == 2)
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{
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for (j = 0;j < len;j++)
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{
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if (strcmp(stu[j].id,a)>=0 && strcmp(stu[j].id,b)<=0)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id, stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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}
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else if (i == 3)
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{
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for (j = 0;j < len;j++)
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{
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if(strcmp(stu[j].name,a)>=0 && strcmp(stu[j].name,b)<=0)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id, stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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}
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else if (i == 4)
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{
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for (j = 0;j < len;j++)
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{
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if (stu[j].score>=k)
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{
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printf("%s %s %s %.2f %.2f %.2f %.2f\n", stu[j].id, stu[j].clas, stu[j].name, stu[j].score1, stu[j].score2, stu[j].score3, stu[j].score);
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}
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}
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}
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} //a表示初始，b表示末尾
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int main()
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{
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while(1)
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{
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start();
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char g = getchar();
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char nul=getchar();
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if (g == '1')
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{
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printf("Please input info of a student（格式为id clas name score1 score2 score3）:\n");
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input();
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}
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else if(g=='4')
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{
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order();
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}
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else if(g=='5')
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{
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output();
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}
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else if(g=='2')
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{
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delete();
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}
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else if(g=='3')
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{
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char a[20],b[20];
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int t;
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double k;
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printf("选择筛选的方式\n1.按班级\n2.按学号\n3.按姓名\n4.按总分\n");
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scanf("%d",&t);
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nul=getchar();
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if(t>=1&&t<=3)
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{
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printf("请输入要求的范围：\nbegin：");
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scanf("%s",a);
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printf("end：");
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scanf("%s",b);
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nul=getchar();
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select(a,b,t,0);
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}
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else if(t==4)
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{
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printf("请输入要大于等于的总分\n");
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scanf("%lf\n",k);
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nul=getchar();
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select(a,b,t,k);
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}
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}
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else if(g=='6')
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{
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break;
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}
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else printf("输入错误");
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printf("continue?\n");
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char s[100];
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scanf("%s",s);
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nul=getchar();
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char* yes="yes";
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if(strcmp(s,yes)==0){}
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else break;
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}
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return 0;
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}
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