学生信息管理系统c语言代码

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

#define MAX_STUDENTS 100
#define MAX_NAME_LENGTH 50
#define MAX_ID_LENGTH 20

struct Student {
    char name[MAX_NAME_LENGTH];
    char id[MAX_ID_LENGTH];
    int age;
};

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

void addStudent() {
    if (numStudents < MAX_STUDENTS) {
        struct Student newStudent;
        printf("Enter student name: ");
        scanf("%s", newStudent.name);
        printf("Enter student ID: ");
        scanf("%s", newStudent.id);
        printf("Enter student age: ");
        scanf("%d", &newStudent.age);

        students[numStudents] = newStudent;
        numStudents++;

        printf("Student added successfully.\n");
    } else {
        printf("Maximum number of students reached.\n");
    }
}

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

void searchStudentById() {
    char searchId[MAX_ID_LENGTH];
    printf("Enter student ID to search: ");
    scanf("%s", searchId);

    int found = 0;
    for (int i = 0; i < numStudents; i++) {
        if (strcmp(students[i].id, searchId) == 0) {
            printf("Student found:\n");
            printf("Name: %s\n", students[i].name);
            printf("ID: %s\n", students[i].id);
            printf("Age: %d\n", students[i].age);
            found = 1;
            break;
        }
    }
    if (!found) {
        printf("Student not found.\n");
    }
}

int main() {
    int choice;

    do {
        printf("\nStudent Information Management System\n");
        printf("1. Add Student\n");
        printf("2. Display Students\n");
        printf("3. Search Student by ID\n");
        printf("4. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addStudent();
                break;
            case 2:
                displayStudents();
                break;
            case 3:
                searchStudentById();
                break;
            case 4:
                printf("Exiting program.\n");
                break;
            default:
                printf("Invalid choice. Please try again.\n");
        }
    } while (choice != 4);

    return 0;
}

这个程序允许用户通过简单的文本菜单执行添加学生信息。显示所有学生信息。通过学生ID搜索学生信息。退出程序。

删除学生信息: 允许用户删除特定学生的信息。编辑学生信息: 允许用户编辑特定学生的信息。数据持久化: 将学生信息保存到文件中，以便在程序重新运行时保留信息。排序: 按照姓名、ID或年龄等字段对学生信息进行排序显示。输入验证: 对用户输入进行验证，防止程序崩溃或产生意外行为。界面美化: 添加一些界面设计，使用户交互更友好。

c
void deleteStudentById() {
    char deleteId[MAX_ID_LENGTH];
    printf("Enter student ID to delete: ");
    scanf("%s", deleteId);

    int found = 0;
    for (int i = 0; i < numStudents; i++) {
        if (strcmp(students[i].id, deleteId) == 0) {
            found = 1;
            for (int j = i; j < numStudents - 1; j++) {
                students[j] = students[j + 1];
            }
            numStudents--;
            printf("Student deleted successfully.\n");
            break;
        }
    }
    if (!found) {
        printf("Student not found.\n");
    }
}

void editStudentById() {
    char editId[MAX_ID_LENGTH];
    printf("Enter student ID to edit: ");
    scanf("%s", editId);

    int found = 0;
    for (int i = 0; i < numStudents; i++) {
        if (strcmp(students[i].id, editId) == 0) {
            found = 1;
            printf("Enter new name: ");
            scanf("%s", students[i].name);
            printf("Enter new ID: ");
            scanf("%s", students[i].id);
            printf("Enter new age: ");
            scanf("%d", &students[i].age);
            printf("Student information updated successfully.\n");
            break;
        }
    }
    if (!found) {
        printf("Student not found.\n");
    }
}

在主菜单中添加选项，让用户能够调用这两个函数：

c
case 5:
    deleteStudentById();
    break;
case 6:
    editStudentById();
    break;