c语言学生成绩管理系统源代码
时间: 2023-10-26 11:20:21 浏览: 18
以下是一个简单的 C 语言学生成绩管理系统的源代码,包括添加学生、删除学生、修改学生信息、查询学生信息和显示所有学生信息等功能。这个系统使用了结构体来存储学生信息。
```
#include <stdio.h>
#include <string.h>
#define MAX_STUDENTS 100
struct student {
int id;
char name[50];
float score;
};
struct student students[MAX_STUDENTS];
int num_students = 0;
void add_student() {
struct student new_student;
printf("\nEnter student id: ");
scanf("%d", &new_student.id);
printf("Enter student name: ");
scanf("%s", new_student.name);
printf("Enter student score: ");
scanf("%f", &new_student.score);
students[num_students] = new_student;
num_students++;
printf("\nStudent added successfully!\n");
}
void delete_student() {
int id, i, found = 0;
printf("\nEnter student id to delete: ");
scanf("%d", &id);
for (i = 0; i < num_students; i++) {
if (students[i].id == id) {
found = 1;
break;
}
}
if (found) {
for (; i < num_students - 1; i++) {
students[i] = students[i + 1];
}
num_students--;
printf("\nStudent deleted successfully!\n");
} else {
printf("\nStudent not found!\n");
}
}
void modify_student() {
int id, i, found = 0;
printf("\nEnter student id to modify: ");
scanf("%d", &id);
for (i = 0; i < num_students; i++) {
if (students[i].id == id) {
found = 1;
break;
}
}
if (found) {
printf("\nEnter new name: ");
scanf("%s", students[i].name);
printf("Enter new score: ");
scanf("%f", &students[i].score);
printf("\nStudent modified successfully!\n");
} else {
printf("\nStudent not found!\n");
}
}
void search_student() {
int id, i, found = 0;
printf("\nEnter student id to search: ");
scanf("%d", &id);
for (i = 0; i < num_students; i++) {
if (students[i].id == id) {
found = 1;
break;
}
}
if (found) {
printf("\nStudent found!\n");
printf("Id: %d\n", students[i].id);
printf("Name: %s\n", students[i].name);
printf("Score: %.2f\n", students[i].score);
} else {
printf("\nStudent not found!\n");
}
}
void display_students() {
int i;
printf("\nList of students:\n");
for (i = 0; i < num_students; i++) {
printf("\nId: %d\n", students[i].id);
printf("Name: %s\n", students[i].name);
printf("Score: %.2f\n", students[i].score);
}
}
int main() {
int choice;
do {
printf("\n\nSelect an option:\n");
printf("1. Add student\n");
printf("2. Delete student\n");
printf("3. Modify student\n");
printf("4. Search student\n");
printf("5. Display all students\n");
printf("6. Exit\n");
scanf("%d", &choice);
switch (choice) {
case 1:
add_student();
break;
case 2:
delete_student();
break;
case 3:
modify_student();
break;
case 4:
search_student();
break;
case 5:
display_students();
break;
case 6:
printf("\nExiting program...\n");
break;
default:
printf("\nInvalid choice!\n");
}
} while (choice != 6);
return 0;
}
```