用c语言写学生管理系统的代码

好的，以下是一个简单的学生管理系统的C语言代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_STUDENTS 100

struct Student {
    char name[50];
    int age;
    float gpa;
};

struct Student students[MAX_STUDENTS];
int num_students = 0;

void add_student() {
    struct Student new_student;
    printf("Enter student name:\n");
    scanf("%s", new_student.name);
    printf("Enter student age:\n");
    scanf("%d", &new_student.age);
    printf("Enter student GPA:\n");
    scanf("%f", &new_student.gpa);
    students[num_students] = new_student;
    num_students++;
    printf("Student added successfully!\n");
}

void remove_student() {
    char name[50];
    printf("Enter student name to remove:\n");
    scanf("%s", name);
    int index = -1;
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].name, name) == 0) {
            index = i;
            break;
        }
    }
    if (index == -1) {
        printf("Student not found!\n");
    } else {
        for (int i = index; i < num_students - 1; i++) {
            students[i] = students[i + 1];
        }
        num_students--;
        printf("Student removed successfully!\n");
    }
}

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

void display_students() {
    printf("Number of Students: %d\n", num_students);
    for (int i = 0; i < num_students; i++) {
        print_student(students[i]);
    }
}

int main() {
    int choice;
    do {
        printf("Enter 1 to add student\n");
        printf("Enter 2 to remove student\n");
        printf("Enter 3 to display all students\n");
        printf("Enter 0 to exit\n");
        scanf("%d", &choice);
        switch(choice) {
            case 1:
                add_student();
                break;
            case 2:
                remove_student();
                break;
            case 3:
                display_students();
                break;
            case 0:
                printf("Exiting...\n");
                break;
            default:
                printf("Invalid choice! Please try again.\n");
        }
    } while (choice != 0);
    return 0;
}

这个学生管理系统可以添加、删除和显示学生的信息。请注意，这个代码示例仅仅是一个简单的示例，实际上的学生管理系统可能需要更多的功能和更复杂的代码。