C 简易通讯录

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

struct Info
{
        char name[32];
        char tel[32];
        int age;
};
typedef struct Info info;

#define SIZE 100

int person = 0;   //表示已添加的人数

void welcome()
{
        system("clear");
        printf("\n\n\n");
        printf("\t\t**********************************\n");
        printf("\t\t**********************************\n");
        printf("\t\t            欢迎          \n");
        printf("\t\t**********************************\n");
        printf("\t\t**********************************\n");
        sleep(1);
}

void menu()
{
        system("clear");
        printf("\n\n\n");
        printf("\t\t**********************************\n");
        printf("\t\t**********************************\n");
        printf("\t\t 1、增加信息           2、修改信息\n");
        printf("\t\t 3、查找信息           4、删除信息\n");
        printf("\t\t 5、显示信息           6、退出\n");
        printf("\t\t**********************************\n");
        printf("\t\t**********************************\n");
}

void addinfo(info *a)
{
        char name[32] = {0};
        char tel[32] = {0};
        int age = 0;

        printf("请输入联系人姓名、电话、年龄\n");
        scanf("%s %s %d",name, tel, &age);

        strcpy(a[person].name, name);
        strcpy(a[person].tel, tel);
        a[person].age = age;

        person++;
}

void modifyinfo(info *a)
{
        char newname[32] = {0};
        char name[32] = {0};
        char tel[32] = {0};
        int age, i;

        printf("请输入要修改的联系人姓名\n");
        scanf("%s",newname);

        for (i = 0; i < person; i++)
        {
                if (strcmp(a[i].name, newname) == 0)
                {
                        printf("%s %s %d\n", a[i].name, a[i].tel, a[i].age);
                        printf("请输入新的联系人信息（姓名、电话、年龄）\n");
                        scanf("%s %s %d", name, tel, &age);

                        strcpy(a[i].name, name);
                        strcpy(a[i].tel, tel);
                        a[i].age = age;
                }
        }
}

void searchinfo(info *a)
{
        char wantname[32] = {0};
        char name[32] = {0};
        char tel[32] = {0};
        int age, i;

        printf("请输入要查找的联系人姓名\n");
        scanf("%s", wantname);

        for (i = 0; i < person; i++)
        {
                if(strcmp(a[i].name, wantname) == 0)
                {
                        printf("%s %s %d\n",a[i].name, a[i].tel, a[i].age);
                }
        }
        sleep(3);
}

void deleteinfo(info *a)
{
        char dename[32] = {0};
        char name[32] = {0};
        char tel[32] = {0};
        int age, i;

        printf("请输入要删除的联系人姓名\n");
        scanf("%s", dename);

        for (i = 0; i < person; i++)
        {
                if (strcmp(a[i].name, dename) == 0)
                {
                        strcpy(a[i].name, a[i + 1].name);
                        strcpy(a[i].tel, a[i + 1].tel);
                        a[i].age = a[i + 1].age;

                        person--;
                        printf("已删除\n");
                }
        }
        sleep(1);
}

void showinfo(info *a)
{
        int i;

        for (i = 0; i < person; i++)
        {
                printf("%s %s %d\n",a[i].name, a[i].tel, a[i].age);
        }

        sleep(3);
}

int main()
{
        int choice;
        info in[SIZE] = {0};

        welcome();

        while (1)
        {
                menu();
                scanf("%d", &choice);

                switch(choice)
                {
                        case 1:
                                addinfo(in);
                                break;
                        case 2:
                                modifyinfo(in);
                                break;
                        case 3:
                                searchinfo(in);
                                break;
                        case 4:
                                deleteinfo(in);
                                break;
                        case 5:
                                showinfo(in);
                        case6:
                        		exit(0);
                        default:
                        		printf("Error\n");
                }
       }
     return 0；
}