用C語言實現一個通訊錄
阿新 • • 發佈:2019-02-06
實現一個通訊錄;
通訊錄可以用來儲存1000個人的資訊,每個人的資訊包括:
姓名、性別、年齡、電話、住址
提供方法:
1. 新增聯絡人資訊
2. 刪除指定聯絡人資訊
3. 查詢指定聯絡人資訊
4. 修改指定聯絡人資訊
5. 顯示所有聯絡人資訊
6. 清空所有聯絡人
7. 以名字排序所有聯絡人
沒有開闢動態記憶體的方法:
標頭檔案:test.h
contact.c檔案#ifndef __CONTACT #define __CONTACT #define _CRT_SECURE_NO_WARNINGS 1 #include<stdio.h> #include<stdlib.h> #include<string.h> #include<assert.h> #define N 1000 typedef struct contact { char name[30]; char gender[10]; int age; int telephone; char address[100]; };//結構體沒有定義變數屬於宣告一個結構體型別 void meau(); void show(struct contact *p, int len);//struct contact *p:結構體指標指向這個結構體, int len:結構體陣列的長度 void Add_linkman(struct contact *p, int len,int flag); int Delete_linkman(struct contact *p, int d_number, int len);//int d_number選擇要刪除第幾個結構體的內容 void Find_member(struct contact *p, int d_number, int len);//int d_number表示要查詢的第幾個結構體的內容(即聯絡人的資訊) void empty(struct contact *p); void Modify(struct contact *p, int M_member);//int M_member:要修改的第幾個聯絡人 int cmp(const void *a, const void *b);//qsort裡面的比較函式定義任意型別 void sort(struct contact *p, int len);//根據聯絡人的名字進行排序 #endif//條件編譯
test.c檔案:#include"test.h" void meau() { printf(" *******************************************\n"); printf(" *******************************************\n"); printf(" ##############My address book##############\n"); printf(" *1-Add 2-Delete 3-Find *\n"); printf(" *4-Empty 5-Modify 6-Sort *\n"); printf(" *0-Exit 7-Show *\n"); printf(" *******************************************\n"); printf(" *******************************************\n"); } void show(struct contact *p, int len) { assert(p); int i = 0; for (i = 0; i < len; i++) { printf("name:%s gender:%s age:%d telephone:%d address:%s", \ p[i].name, p[i].gender, p[i].age, p[i].telephone, p[i].address); printf("\n"); } } void Add_linkman(struct contact *p, int len,int flag) { assert(p); int i = 0; for (i = flag; i < len; i++) { printf("請輸入姓名:"); scanf("%s", &p[i].name); printf("請輸入姓別:"); scanf("%s", &p[i].gender); printf("請輸入年齡:"); scanf("%d", &p[i].age); printf("請輸入電話:"); scanf("%d", &p[i].telephone); printf("請輸入地址:"); scanf("%s", &p[i].address); } } int Delete_linkman(struct contact *p, int d_number, int len) { assert(p); int i = 0; for (i = d_number - 1; i < len - 1; i++) { p[i] = p[i + 1]; } } void Find_member(struct contact *p, int d_number, int len) { assert(p); if (d_number - 1 >= 0 || d_number - 1<len) { printf("name:%s gender:%s age:%d telephone:%d address:%s", \ p[d_number].name, p[d_number].gender, p[d_number].age, p[d_number].telephone, p[d_number].address); printf("\n"); } else { printf("不存在該聯絡人:"); return; } } void empty(struct contact *p) { assert(p); int i = 0; for (i = 0; i <1000; i++) { memset(p+i, 0, sizeof(struct contact)); } } void Modify(struct contact *p, int M_member) { assert(p); printf("修改之前聯絡人的資訊為:"); printf("\n"); printf("name:%s gender:%s age:%d telephone:%d address:%s", \ p[M_member - 1].name, p[M_member - 1].gender, p[M_member - 1].age, p[M_member - 1].telephone, p[M_member - 1].address); printf("\n"); printf("請輸入要修改的資訊:"); printf("請輸入姓名:"); scanf("%s", &p[M_member - 1].name); printf("請輸入姓別:"); scanf("%s", &p[M_member - 1].gender); printf("請輸入年齡:"); scanf("%d", &p[M_member - 1].age); printf("請輸入電話:"); scanf("%d", &p[M_member - 1].telephone); printf("請輸入地址:"); scanf("%s", &p[M_member - 1].address); } int cmp(const void *a, const void *b) { struct contact *aa = (struct contact *)a; struct contact *bb = (struct contact *)b; if (aa->name != bb->name) return(strcmp((aa->name), (bb->name))); } void sort(struct contact *p, int len) { assert(p); qsort(p, len, sizeof(struct contact), cmp); }
#include"test.h" int main() { int num = 0; struct contact student[N]; int len = 0; int flag = 0;//定義一個標誌位來結構體陣列中每個結構體的位置 int total = N; int delete_number = 0; meau(); while (1) { printf("請輸入數字進行選擇:"); scanf("%d", &num); switch (num) { case 1:{ printf("請新增len個學生的資訊:"); scanf("%d", &len); Add_linkman(student,len+flag,flag); flag=flag+len; }break; case 2:{ printf("請輸入要刪除的第i個學生的資訊:"); scanf("%d", &delete_number); Delete_linkman(student, delete_number, len+flag); flag = flag - 1; }break; case 3:{ int Find_number = 0; printf("請輸入要查詢的第i個學生的資訊:"); scanf("%d", &Find_number); Find_member(student, delete_number, len+flag); }break; case 4:{ printf("清空所有聯絡人:"); empty(student); }break; case 5:{ printf("請輸入要修改的的第i個學生的資訊:"); int M_member = 0; scanf("%d", &M_member); Modify(student, M_member); }break; case 6:{ printf("根據名字排序所有聯絡人:\n"); sort(student, len+flag); }break; case 7:{ printf("列印所有聯絡人的資訊:\n"); show(student, flag); }break; case 0:{ exit(1); } default:printf("enter error data!!!"); } } system("pause"); return 0; }