代码如下:
注：此代码运行于VS2017，如果在VC6.0中运行，可将scanf_s改成scanf
并且for(int i=0;i<len;i++){xxx}改成int i=0;for(i=0;i<len;i++){xxx}即可正常运行
#include<stdio.h>
#include<stdlib.h>
//定义一个学生结构体数组
struct Student{
int id;
double score;
}Student[100];
//记录实际导入学生个数
int len = 0;
//求最高分
void getmax() {
int maxid = 0;
double maxscore = -1;
for (int i = 0; i < len; i++) {
if (Student[i].score > maxscore) {
maxscore = Student[i].score;
maxid = Student[i].id;
}
}
printf("班级最高分为:%.2lf学号是:%d\n", maxscore, maxid);
}
//求最低分
void getmin() {
int minid = 0;
double minscore = 101;
for (int i = 0; i < len; i++) {
if (Student[i].score < minscore) {
minscore = Student[i].score;
minid = Student[i].id;
}
}
printf("班级最低分为:%.2lf学号是:%d\n", minscore, minid);
}
//求总分
double getsum() {
double sum = 0;
for (int i = 0; i < len; i++) {
sum += Student[i].score;
}
return sum;
}
//求平均分
double getave() {
double ave = 0;
return getsum() / len;
}
//导入学生信息
void input() {
int id = 0;
double score = 0;
while (1) {
printf("请输入学生学号:");
scanf_s("%d", &id);
if (id == -1) { break; }
printf("请输入学生成绩:");
scanf_s("%lf", &score);
Student[len].id = id;
Student[len].score = score;
len++;
}
printf("信息导入完毕!\n");
}
int main() {
input();
printf("全班总分为:%.2lf\n", getsum());
printf("全班平均分为:%.2lf\n", getave());
getmax();
getmin();
return 0;
}
程序运行测试图如下：
