c程序中文学生管理系统

好的，我可以为您提供一个简单的C语言学生管理系统的示例代码。这个学生管理系统可以添加、删除、修改和显示学生信息。以下是示例代码：

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

#define MAX_STUDENTS 100

struct student {
    char name[50];
    char id[20];
    int age;
};

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

void add_student() {
    if (num_students >= MAX_STUDENTS) {
        printf("Error: Maximum number of students reached.\n");
        return;
    }

    struct student new_student;
    printf("Enter name: ");
    scanf("%s", new_student.name);
    printf("Enter ID: ");
    scanf("%s", new_student.id);
    printf("Enter age: ");
    scanf("%d", &new_student.age);

    students[num_students] = new_student;
    num_students++;

    printf("Student added successfully.\n");
}

void remove_student() {
    char id[20];
    printf("Enter ID of student to remove: ");
    scanf("%s", id);

    int found = 0;
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].id, id) == 0) {
            found = 1;
            for (int j = i; j < num_students - 1; j++) {
                students[j] = students[j+1];
            }
            num_students--;
            printf("Student removed successfully.\n");
            break;
        }
    }

    if (!found) {
        printf("Error: Student not found.\n");
    }
}

void update_student() {
    char id[20];
    printf("Enter ID of student to update: ");
    scanf("%s", id);

    int found = 0;
    for (int i = 0; i < num_students; i++) {
        if (strcmp(students[i].id, id) == 0) {
            found = 1;
            printf("Enter new name (or leave blank to keep current name): ");
            char new_name[50];
            scanf("%s", new_name);
            if (strcmp(new_name, "") != 0) {
                strcpy(students[i].name, new_name);
            }
            printf("Enter new age (or leave blank to keep current age): ");
            char new_age_str[10];
            scanf("%s", new_age_str);
            if (strcmp(new_age_str, "") != 0) {
                int new_age = atoi(new_age_str);
                students[i].age = new_age;
            }
            printf("Student updated successfully.\n");
            break;
        }
    }

    if (!found) {
        printf("Error: Student not found.\n");
    }
}

void display_students() {
    printf("Name\tID\tAge\n");
    for (int i = 0; i < num_students; i++) {
        printf("%s\t%s\t%d\n", students[i].name, students[i].id, students[i].age);
    }
}

int main() {
    int choice = 0;
    while (choice != 5) {
        printf("\n1. Add student\n");
        printf("2. Remove student\n");
        printf("3. Update student\n");
        printf("4. Display students\n");
        printf("5. Exit\n");
        printf("Enter choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_student();
                break;
            case 2:
                remove_student();
                break;
            case 3:
                update_student();
                break;
            case 4:
                display_students();
                break;
            case 5:
                printf("Goodbye!\n");
                break;
            default:
                printf("Error: Invalid choice.\n");
                break;
        }
    }

    return 0;
}

这个示例代码包含一个 student 结构体，用于存储学生信息。程序使用一个 students 数组来存储所有的学生信息，最多存储100个学生。程序提供了添加、删除、修改和显示学生信息的功能。可以根据需要进行修改和扩展。