编写学生管理系统代码C语言
时间: 2023-05-17 07:02:36 浏览: 41
非常感谢您的提问。以下是一个简单的学生管理系统的 C 语言代码:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_STUDENTS 100
struct student {
char name[50];
int id;
float gpa;
};
struct student students[MAX_STUDENTS];
int num_students = 0;
void add_student() {
if (num_students >= MAX_STUDENTS) {
printf("Error: too many students\n");
return;
}
struct student s;
printf("Enter student name: ");
scanf("%s", s.name);
printf("Enter student ID: ");
scanf("%d", &s.id);
printf("Enter student GPA: ");
scanf("%f", &s.gpa);
students[num_students] = s;
num_students++;
}
void print_student(struct student s) {
printf("%s (ID: %d, GPA: %.2f)\n", s.name, s.id, s.gpa);
}
void list_students() {
printf("List of students:\n");
for (int i = 0; i < num_students; i++) {
print_student(students[i]);
}
}
int find_student(int id) {
for (int i = 0; i < num_students; i++) {
if (students[i].id == id) {
return i;
}
}
return -1;
}
void delete_student() {
int id;
printf("Enter student ID to delete: ");
scanf("%d", &id);
int index = find_student(id);
if (index == -1) {
printf("Error: student not found\n");
return;
}
for (int i = index; i < num_students - 1; i++) {
students[i] = students[i + 1];
}
num_students--;
}
void update_student() {
int id;
printf("Enter student ID to update: ");
scanf("%d", &id);
int index = find_student(id);
if (index == -1) {
printf("Error: student not found\n");
return;
}
printf("Enter new student name: ");
scanf("%s", students[index].name);
printf("Enter new student GPA: ");
scanf("%f", &students[index].gpa);
}
int main() {
int choice;
do {
printf("\n");
printf("1. Add student\n");
printf("2. List students\n");
printf("3. Delete student\n");
printf("4. Update student\n");
printf("5. Quit\n");
printf("Enter your choice: ");
scanf("%d", &choice);
switch (choice) {
case 1:
add_student();
break;
case 2:
list_students();
break;
case 3:
delete_student();
break;
case 4:
update_student();
break;
case 5:
printf("Goodbye!\n");
break;
default:
printf("Error: invalid choice\n");
break;
}
} while (choice != 5);
return 0;
}