实现一个通讯录,通讯录可以用来存储1000个人的信息,每个人的信息包括:
姓名、性别、年龄、电话、住址
提供方法:
1. 添加联系人信息
2. 删除指定联系人信息
3. 查找指定联系人信息
4. 修改指定联系人信息
5. 显示所有联系人信息
6. 清空所有联系人
7. 以名字排序所有联系人
没有开辟动态内存的方法:
头文件:test.h
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#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]; }; //结构体没有定义变量属于声明一个结构体类型 void meau(); void show( struct contact *p, int len); //struct contact *p:结构体指针指向这个结构体, int len:结构体数组的长度 void Add_linkman( struct contact *p, int len, int flag); int Delete_linkman( struct contact *p, int d_number, int len); //int d_number选择要删除第几个结构体的内容 void Find_member( struct contact *p, int d_number, int len); //int d_number表示要查找的第几个结构体的内容(即联系人的信息) void empty( struct contact *p); void Modify( struct contact *p, int M_member); //int M_member:要修改的第几个联系人 int cmp( const void *a, const void *b); //qsort里面的比较函数定义任意类型 void sort( struct contact *p, int len); //根据联系人的名字进行排序 #endif//条件编译 |
contact.c文件
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#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 ( "请输入姓名:" ); scanf ( "%s" , &p[i].name); printf ( "请输入姓别:" ); scanf ( "%s" , &p[i].gender); printf ( "请输入年龄:" ); scanf ( "%d" , &p[i].age); printf ( "请输入电话:" ); scanf ( "%d" , &p[i].telephone); printf ( "请输入地址:" ); 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 ( "不存在该联系人:" ); 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 ( "修改之前联系人的信息为:" ); 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 ( "请输入要修改的信息:" ); printf ( "请输入姓名:" ); scanf ( "%s" , &p[M_member - 1].name); printf ( "请输入姓别:" ); scanf ( "%s" , &p[M_member - 1].gender); printf ( "请输入年龄:" ); scanf ( "%d" , &p[M_member - 1].age); printf ( "请输入电话:" ); scanf ( "%d" , &p[M_member - 1].telephone); printf ( "请输入地址:" ); 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); } |
test.c文件:
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#include"test.h" int main() { int num = 0; struct contact student[N]; int len = 0; int flag = 0; //定义一个标志位来结构体数组中每个结构体的位置 int total = N; int delete_number = 0; meau(); while (1) { printf ( "请输入数字进行选择:" ); scanf ( "%d" , &num); switch (num) { case 1:{ printf ( "请添加len个学生的信息:" ); scanf ( "%d" , &len); Add_linkman(student,len+flag,flag); flag=flag+len; } break ; case 2:{ printf ( "请输入要删除的第i个学生的信息:" ); scanf ( "%d" , &delete_number); Delete_linkman(student, delete_number, len+flag); flag = flag - 1; } break ; case 3:{ int Find_number = 0; printf ( "请输入要查找的第i个学生的信息:" ); scanf ( "%d" , &Find_number); Find_member(student, delete_number, len+flag); } break ; case 4:{ printf ( "清空所有联系人:" ); empty(student); } break ; case 5:{ printf ( "请输入要修改的的第i个学生的信息:" ); int M_member = 0; scanf ( "%d" , &M_member); Modify(student, M_member); } break ; case 6:{ printf ( "根据名字排序所有联系人:\n" ); sort(student, len+flag); } break ; case 7:{ printf ( "打印所有联系人的信息:\n" ); show(student, flag); } break ; case 0:{ exit (1); } default : printf ( "enter error data!!!" ); } } system ( "pause" ); return 0; } |
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原文链接:http://blog.csdn.net/persistence_s/article/details/53428262