编写c语言程序，制作一个简单的美发沙龙会员管理系统

好的，我可以为您提供一个简单的美发沙龙会员管理系统的C语言程序。

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

#define MAX_MEMBERS 100

// 会员结构体
typedef struct {
    char name[20];          // 姓名
    char phone_number[12];  // 手机号码
    int points;             // 积分
} Member;

// 会员数组
Member members[MAX_MEMBERS];
int num_members = 0;

// 显示主菜单
void show_menu() {
    printf("欢迎使用美发沙龙会员管理系统\n");
    printf("1. 添加会员\n");
    printf("2. 修改会员信息\n");
    printf("3. 删除会员\n");
    printf("4. 查询会员信息\n");
    printf("5. 显示所有会员信息\n");
    printf("6. 退出系统\n");
    printf("请选择操作：");
}

// 添加会员
void add_member() {
    if (num_members >= MAX_MEMBERS) {
        printf("会员数量已达上限，无法添加新会员！\n");
        return;
    }

    Member new_member;
    printf("请输入会员姓名：");
    scanf("%s", new_member.name);
    printf("请输入会员手机号码：");
    scanf("%s", new_member.phone_number);
    new_member.points = 0;

    members[num_members++] = new_member;
    printf("添加会员成功！\n");
}

// 修改会员信息
void modify_member() {
    char phone_number[12];
    printf("请输入要修改的会员手机号码：");
    scanf("%s", phone_number);

    int index = -1;
    for (int i = 0; i < num_members; i++) {
        if (strcmp(members[i].phone_number, phone_number) == 0) {
            index = i;
            break;
        }
    }

    if (index == -1) {
        printf("找不到该会员！\n");
        return;
    }

    Member *member = &members[index];
    printf("请输入会员姓名（原姓名：%s）：", member->name);
    scanf("%s", member->name);

    printf("请输入会员手机号码（原手机号码：%s）：", member->phone_number);
    scanf("%s", member->phone_number);

    printf("修改会员信息成功！\n");
}

// 删除会员
void delete_member() {
    char phone_number[12];
    printf("请输入要删除的会员手机号码：");
    scanf("%s", phone_number);

    int index = -1;
    for (int i = 0; i < num_members; i++) {
        if (strcmp(members[i].phone_number, phone_number) == 0) {
            index = i;
            break;
        }
    }

    if (index == -1) {
        printf("找不到该会员！\n");
        return;
    }

    for (int i = index; i < num_members - 1; i++) {
        members[i] = members[i + 1];
    }

    num_members--;
    printf("删除会员成功！\n");
}

// 查询会员信息
void search_member() {
    char phone_number[12];
    printf("请输入要查询的会员手机号码：");
    scanf("%s", phone_number);

    int index = -1;
    for (int i = 0; i < num_members; i++) {
        if (strcmp(members[i].phone_number, phone_number) == 0) {
            index = i;
            break;
        }
    }

    if (index == -1) {
        printf("找不到该会员！\n");
        return;
    }

    Member *member = &members[index];
    printf("姓名：%s\n", member->name);
    printf("手机号码：%s\n", member->phone_number);
    printf("积分：%d\n", member->points);
}

// 显示所有会员信息
void show_all_members() {
    printf("所有会员信息：\n");
    printf("%-10s%-15s%-10s\n", "姓名", "手机号码", "积分");
    for (int i = 0; i < num_members; i++) {
        Member *member = &members[i];
        printf("%-10s%-15s%-10d\n", member->name, member->phone_number, member->points);
    }
}

int main() {
    int choice;
    do {
        show_menu();
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_member();
                break;
            case 2:
                modify_member();
                break;
            case 3:
                delete_member();
                break;
            case 4:
                search_member();
                break;
            case 5:
                show_all_members();
                break;
            case 6:
                printf("谢谢使用美发沙龙会员管理系统，再见！\n");
                break;
            default:
                printf("无效的选择，请重新选择！\n");
                break;
        }
    } while (choice != 6);

    return 0;
}

这个程序实现了以下功能：

1. 添加会员
2. 修改会员信息
3. 删除会员
4. 查询会员信息
5. 显示所有会员信息
6. 退出系统

您可以根据实际需要进行修改和完善。