#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define MAX 1000
/*定义学生成绩信息结构*/
struct stu
{
char id[8];
char name[8];
double Chinese;
double Math;
double English;
double average;
double total;
};
/*学生结构数组，用于存储学生成绩信息*/
struct stu students[MAX];
/*当前学生人数*/
int current;
void input()
{
int i;
printf("请输入学生人数：");
scanf("%d", & current);
for (i = 0; i < current; i++)
{
printf("\n请输入学生学号，最多为7位数: ");
scanf("%s", students[i].id);
printf("请输入学生姓名：");
scanf("%s", students[i].name);
printf("请输入语文成绩：");
scanf("%lf", &students[i].Chinese);
printf("请输入数学成绩：");
scanf("%lf", &students[i].Math);
printf("请输入英语成绩：");
scanf("%lf", &students[i].English);
students[i].total = students[i].Chinese + students[i].Math + students[i].English;
students[i].average = students[i].total / 3;
}
}
/*排名次，即对学生结构数组排序*/
void sort(struct stu array[], int n)
{
int i, j;
struct stu temp;
for (i = 0; i < n; i++)
{
for (j = i+1; j < n; j++)
{
if (array[i].average - array[j].average < 1e-16)
{
temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
}
/*统计平均成绩，并输出各分数段的人数*/
void print_score(struct stu array[], int n)
{
int i;
double ave = 0;
int sum1 = 0, sum2 = 0, sum3 = 0, sum4 = 0;
for (i = 0; i < n; i++)
{
ave += array[i].average;
switch ((int)(array[i].average / 10))
{
case 10:
case 9: sum1++; break;
case 8: sum2++; break;
case 7:
case 6: sum3++; break;
default: sum4++;
}
}
printf("全班的平均分为：%.1f\n", ave/n);
printf("平均分在90分以上的人数为：%d\n", sum1);
printf("平均分在80~89的人数为：%d\n", sum2);
printf("平均分在60~79的人数为：%d\n", sum3);
printf("平均分在60分以下的人数为：%d\n", sum4);
}
/*输出不及格科目及学生名单*/
void print_unreach(struct stu array[], int n)
{
int i;
printf("科目\t学号\t名字\n");
for (i = 0; i < n; i++)
{
if (array[i].Chinese < 60)
{
printf("语文\t%s\t%s\n", array[i].id, array[i].name);
}
if (array[i].Math < 60)
{
printf("数学\t%s\t%s\n", array[i].id, array[i].name);
}
if (array[i].English < 60)
{
printf("英语\t%s\t%s\n", array[i].id, array[i].name);
}
}
}
/*打印优等生名单*/
void print_good(struct stu array[], int n)
{
int i;
char mark = 0;
if (n > 3)
{
n = 3;
}
printf("学号\t姓名\t语文\t数学\t英语\t平均分\t名次\n");
for (i = 0; i < n; i++)
{
if ((array[i].Chinese > 60) && (array[i].Math > 60) && (array[i].English > 60))
{
if (array[i].average > 90) mark = 1;
else if (array[i].average > 85)
{
if (array[i].Chinese == 100) mark = 1;
if (array[i].Math == 100) mark = 1;
if (array[i].English == 100) mark = 1;
if (array[i].Chinese > 95 && array[i].English > 95) mark = 1;
if (array[i].Chinese > 95 && array[i].Math > 95) mark = 1;
if (array[i].Math > 95 && array[i].English > 95) mark = 1;
}
if (mark == 1)
{
printf("%s\t%s\t", array[i].id, array[i].name);
printf("%.f\t%.f\t%.f\t%.1f\t", array[i].Chinese, array[i].Math, array[i].English, array[i].average);
printf("%d\n", i+1);
}
}
}
}
/*按学生姓名查询成绩*/
void search_name(struct stu array[], int n, char* name)
{
int i;
char mark = 1;
for (i = 0; i < n; i++)
{
if (strcmp(name, array[i].name) == 0)
{
printf("学生姓名：%s\n", name);
printf("学生学号：%s\n", array[i].id);
printf("语文：%.f\n", array[i].Chinese);
printf("数学：%.f\n", array[i].Math);
printf("英语：%.f\n", array[i].English);
printf("平均分：%.1f\n", array[i].average);
mark = 0;
}
}
if (mark == 1) puts("不存在该学生记录");
}
/*按学生学号查询成绩*/
void search_id(struct stu array[], int n, char* id)
{
int i;
char mark = 1;
for (i = 0; i < n; i++)
{
if (strcmp(id, array[i].id) == 0)
{
printf("学生姓名：%s\n", array[i].name);
printf("学生学号：%s\n", array[i].id);
printf("语文：%.f\n", array[i].Chinese);
printf("数学：%.f\n", array[i].Math);
printf("英语：%.f\n", array[i].English);
printf("平均分：%.1f\n", array[i].average);
mark = 0;
break;
}
}
if (mark == 1) puts("不存在该学生记录");
}
void print_menu()
{
system("cls");
printf("1.输入学生信息\n");
puts("2.统计全班学生成绩");
puts("3.按学号查询学生成绩");
puts("4.按姓名查询学生成绩");
puts("5.输出不及格情况");
puts("6.输出优等生名单");
puts("0.退出本程序");
printf("\n\n 请输入你的选择：");
}
int main(int argc, char **argv)
{
char ch = 0;
char id[8], name[8];
while (ch != '0')
{
print_menu();
ch = getchar();
switch (ch)
{
case '1':
{
system("cls");
input();
sort(students, current);
break;
}
case '2':
{
system("cls");
print_score(students, current);
break;
}
case '3':
{
system("cls");
printf("请输入学号：");
scanf("%s", id);
search_id(students, current, id);
break;
}
case '4':
{
system("cls");
printf("请输入姓名：");
scanf("%s", name);
search_name(students, current, name);
break;
}
case '5':
{
system("cls");
print_unreach(students, current);
break;
}
case '6':
{
system("cls");
print_good(students, current);
break;
}
case '0': exit(0);
}
printf("\n\n按任意键返回主菜单……");
getchar();
getchar();
}
return 0;
}
追问我是初学者啊 用指针的话 来时会看出来的
追答这是我以前的，我实在是懒得改啊
追问要不然 我会挂的 啊啊 啊啊···········
拜托你帮帮我吧···