C语言班级成绩管理系统
时间: 2024-01-02 22:22:10 浏览: 34
C语言班级成绩管理系统是一个用于管理班级学生成绩的系统,它可以实现成绩的录入、显示、修改、排序和保存等功能。以下是一个简单的示例:
```c
#include <stdio.h>
#include <stdlib.h>
#define MAX_STUDENTS 100
#define MAX_COURSES 5
struct Student {
char name[50];
int scores[MAX_COURSES];
};
struct Student students[MAX_STUDENTS];
int numStudents = 0;
void addStudent() {
if (numStudents >= MAX_STUDENTS) {
printf("班级已满,无法添加新学生。\n");
return;
}
struct Student newStudent;
printf("请输入学生姓名:");
scanf("%s", newStudent.name);
printf("请输入学生的%d门课程成绩:\n", MAX_COURSES);
for (int i = 0; i < MAX_COURSES; i++) {
printf("请输入第%d门课程的成绩:", i + 1);
scanf("%d", &newStudent.scores[i]);
}
students[numStudents] = newStudent;
numStudents++;
printf("学生添加成功!\n");
}
void displayStudents() {
if (numStudents == 0) {
printf("班级中没有学生。\n");
return;
}
printf("班级学生列表:\n");
for (int i = 0; i < numStudents; i++) {
printf("姓名:%s\n", students[i].name);
printf("成绩:");
for (int j = 0; j < MAX_COURSES; j++) {
printf("%d ", students[i].scores[j]);
}
printf("\n");
}
}
void modifyStudent() {
if (numStudents == 0) {
printf("班级中没有学生。\n");
return;
}
char name[50];
printf("请输入要修改成绩的学生姓名:");
scanf("%s", name);
int index = -1;
for (int i = 0; i < numStudents; i++) {
if (strcmp(students[i].name, name) == 0) {
index = i;
break;
}
}
if (index == -1) {
printf("未找到该学生。\n");
return;
}
printf("请输入学生的%d门课程成绩:\n", MAX_COURSES);
for (int i = 0; i < MAX_COURSES; i++) {
printf("请输入第%d门课程的成绩:", i + 1);
scanf("%d", &students[index].scores[i]);
}
printf("成绩修改成功!\n");
}
void sortStudents() {
if (numStudents == 0) {
printf("班级中学生。\n");
return;
}
// 使用冒泡排序按照总成绩排序
for (int i = 0; i < numStudents - 1; i++) {
for (int j = 0; j < numStudents - i - 1; j++) {
int totalScore1 = 0;
int totalScore2 = 0;
for (int k = 0; k < MAX_COURSES; k++) {
totalScore1 += students[j].scores[k];
totalScore2 += students[j + 1].scores[k];
if (totalScore1 < totalScore2) {
struct Student temp = students[j];
students[j] = students[j + 1];
students[j + 1] = temp;
}
}
}
printf("学生排序成功!\n");
}
void saveStudents() {
if (numStudents == 0) {
printf("班级中没有学生。\n");
return;
}
FILE *file = fopen("students.txt", "w");
if (file == NULL) {
printf("文件打开失败。\n");
return;
}
for (int i = 0; i < numStudents; i++) {
fprintf(file, "%s ", students[i].name);
for (int j = 0; j < MAX_COURSES; j++) {
fprintf(file, "%d ", students[i].scores[j]);
}
fprintf(file, "\n");
}
fclose(file);
printf("学生信息保存成功!\n");
}
int main() {
int choice;
while (1) {
printf("\n班级成绩管理系统\n");
printf("1. 添加学生\n");
printf("2. 显示学生\n");
printf("3. 修改学生成绩\n");
printf("4. 排序学生\n");
printf("5. 保存学生信息\n");
printf("0. 退出\n");
printf("请输入您的选择:");
scanf("%d", &choice);
switch (choice) {
case 1:
addStudent();
break;
case 2:
displayStudents();
break;
case 3:
modifyStudent();
break;
case 4:
sortStudents();
break;
case 5:
saveStudents();
break;
case 0:
printf("感谢使用班级成绩管理系统,再见!\n");
exit(0);
default:
printf("无效的选择,请重新输入。\n");
break;
}
}
return 0;
}
```