c语言写一个学生学籍管理系统

好的，下面是一个简单的学生学籍管理系统的C语言代码：

#include <stdio.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() {
    struct Student s;
    printf("Enter name: ");
    scanf("%s", s.name);
    printf("Enter ID: ");
    scanf("%d", &s.id);
    printf("Enter GPA: ");
    scanf("%f", &s.gpa);
    students[num_students++] = s;
}

void print_student(struct Student s) {
    printf("Name: %s\n", s.name);
    printf("ID: %d\n", s.id);
    printf("GPA: %.2f\n", s.gpa);
}

void print_all_students() {
    for (int i = 0; i < num_students; i++) {
        printf("Student %d:\n", i+1);
        print_student(students[i]);
        printf("\n");
    }
}

void find_student() {
    int id;
    printf("Enter student ID: ");
    scanf("%d", &id);
    for (int i = 0; i < num_students; i++) {
        if (students[i].id == id) {
            printf("Found student:\n");
            print_student(students[i]);
            return;
        }
    }
    printf("Student not found.\n");
}

int main() {
    while (1) {
        printf("1. Add student\n");
        printf("2. Print all students\n");
        printf("3. Find student\n");
        printf("4. Quit\n");
        int choice;
        printf("Enter choice: ");
        scanf("%d", &choice);
        if (choice == 1) {
            add_student();
        } else if (choice == 2) {
            print_all_students();
        } else if (choice == 3) {
            find_student();
        } else if (choice == 4) {
            break;
        } else {
            printf("Invalid choice.\n");
        }
    }
    return 0;
}

这个程序可以添加学生信息、打印所有学生信息、查找特定学生信息。你可以根据需要进行修改和完善，添加其他功能。