C语言通讯录小功能 C语言实现通讯录小功能
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头文件contact.h
#pragma once
#define _CRT_SECURE_NO_WARNINGS 1
//#define max 1000
#define fault 3
#define max_name 20
#define max_telephone 12
#define max_sex 5
#define max_address 30
#include<stdio.h>
#include<string.h>
#include<assert.h>
#include<stdlib.h>
#include<errno.h>
enum option
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
SHOW,
SORT,
SAVE
};
struct people_information
{
char name[max_name];
char telephone[max_telephone];
char sex[max_sex];
char address[max_address];
int age;
};
struct contact
{
//struct people_information data[max];
struct people_information *data;//动态空间
int size;//记录当前有多少信息
int capacity;//当前最大容量
};
void initcontact(struct contact* ps);//初始化函数
void add(struct contact* ps);
void my_delete(struct contact* ps);
void search(const struct contact* ps);
void modify(struct contact* ps);//修改指定联系人
void show(const struct contact* ps);//展示全部联系人
void sort(struct contact* ps);
void destroy(struct contact* ps);
void save(struct contact* ps);
分装函数contact.c
#define _CRT_SECURE_NO_WARNINGS 1
#include"contact.h"
void initcontact(struct contact* ps)
{
//memset(ps->data, 0, sizeof(ps->data));
//ps->size = 0;//初始化通讯录中只有0个信息
ps->data = (struct people_information*)malloc(fault * sizeof(struct people_information));
if (ps->data == NULL)
{
return;
}
ps->size = 0;
ps->capacity = fault;
}
void checkcapacity(struct contact* ps)
{
if (ps->size == ps->capacity)
{
struct people_information * ptr=realloc(ps->data, (ps->capacity + 2)*sizeof(struct people_information));
if (ptr != NULL)
{
ps->data = ptr;
ps->capacity += 2;
printf("增容成功\n");
}
else
{
printf("增容失败\n");
}
}
}
void add(struct contact* ps)
{
/*if (ps->size == max)
{
printf("通讯录已满，无法增加\n");
}
else
{
printf("请输入姓名:>");
scanf("%s", ps->data[ps->size].name);
printf("请输入电话:>");
scanf("%s", ps->data[ps->size].telephone);
printf("请输入性别:>");
scanf("%s", ps->data[ps->size].sex);
printf("请输入住址:>");
scanf("%s", ps->data[ps->size].address);
printf("请输入年龄:>");
scanf("%d", &(ps->data[ps->size].age));
ps->size++;
printf("添加成功!\n");
}*/
//检测当前通讯录的容量
checkcapacity(ps);
printf("请输入姓名:>");
scanf("%s", ps->data[ps->size].name);
printf("请输入电话:>");
scanf("%s", ps->data[ps->size].telephone);
printf("请输入性别:>");
scanf("%s", ps->data[ps->size].sex);
printf("请输入住址:>");
scanf("%s", ps->data[ps->size].address);
printf("请输入年龄:>");
scanf("%d", &(ps->data[ps->size].age));
ps->size++;
printf("添加成功!\n");
}
void show(const struct contact* ps)
{
if (ps->size == 0)
{
printf("通讯录为空\n");
}
else
{
int i = 0;
for (i = 0; i < ps->size; i++)
{
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
"姓名", "电话", "性别", "住址", "年龄");
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
ps->data[i].name,
ps->data[i].telephone,
ps->data[i].sex,
ps->data[i].address,
ps->data[i].age);
}
}
}
static int FindByName(const struct contact* ps, char name[max_name])//冗余函数、查找函数
{
//找到了返回名字所在元素的下标，找不到返回-1
int i = 0;
for (i = 0; i < ps->size; i++)
{
if (0 == strcmp(ps->data[i].name, name))
{
return i;
}
}
return -1;
}
void my_delete(struct contact* ps)
{
printf("请输入您要删除联系人的姓名:");
char name[max_name] ;
scanf("%s", name);
int pos = FindByName(ps, name);
if (pos==-1)
{
printf("您要删除的人不存在\n");
}
else
{
//删除数据
int j = 0;
for (j = pos; j < ps->size - 1; j++)
{
ps->data[j] = ps->data[j + 1];
}
ps->size--;
printf("删除成功!\n");
}
}
void search( const struct contact* ps)
{
printf("请输入您要查找联系人的姓名:");
char name[max_name];
scanf("%s", name);
int pos = FindByName(ps, name);
if (pos == -1)
{
printf("您要查找的联系人不存在\n");
}
else
{
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
"姓名", "电话", "性别", "住址", "年龄");
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
ps->data[pos].name,
ps->data[pos].telephone,
ps->data[pos].sex,
ps->data[pos].address,
ps->data[pos].age);
}
}//完成
void modify(struct contact* ps)
{
printf("请输入您要修改联系人的姓名:");
char name[max_name];
scanf("%s", name);
int pos = FindByName(ps, name);
if (pos == -1)
{
printf("您要修改的联系人不存在\n");
}
else
{
printf("新的姓名:");
scanf("%s", ps->data[pos].name);
printf("新的电话:");
scanf("%s", ps->data[pos].telephone);
printf("新的性别:");
scanf("%s", ps->data[pos].sex);
printf("新的住址:");
scanf("%s", ps->data[pos].address);
printf("新的年龄:");
scanf("%d", &(ps->data[pos].age));
printf("修改完成！\n");
}
}
void sort(struct contact* ps)
{
assert(ps);
if (ps->size == 0)
{
printf("通讯录为空，无需排序\n");
}
else if (ps->size == 1)
{
printf("您的通讯录中只有一个人，无需排序\n");
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4s\n",
"姓名", "电话", "性别", "住址", "年龄");
printf("%-20s\t%-12s\t%-5s\t%-30s\t%-4d\n",
ps->data[0].name,
ps->data[0].telephone,
ps->data[0].sex,
ps->data[0].address,
ps->data[0].age);
}
else
{
int i = 0;
for (i = 0; i < ps->size; i++)
{
int j = 0;
for (j = 0; j < ps->size - i - 1; j++)
{
int ret = strcmp(ps->data[j].name, ps->data[j + 1].name);
if (ret > 0)
{
char tmp1[max_name] = { 0 };
char tmp2[max_telephone] = { 0 };
char tmp3[max_sex] = { 0 };
char tmp4[max_address] = { 0 };
int tmp5 = 0;
strcpy(tmp1, ps->data[j].name);
strcpy(tmp2, ps->data[j].telephone);
strcpy(tmp3, ps->data[j].sex);
strcpy(tmp4, ps->data[j].address);
tmp5 = ps->data[j].age;//交给临时变量
strcpy(ps->data[j].name, ps->data[j+1].name);
strcpy(ps->data[j].telephone, ps->data[j+1].telephone);
strcpy(ps->data[j].sex, ps->data[j+1].sex);
strcpy(ps->data[j].address, ps->data[j+1].address);
ps->data[j].age= ps->data[j+1].age;
strcpy( ps->data[j + 1].name,tmp1);
strcpy( ps->data[j + 1].telephone,tmp2);
strcpy( ps->data[j + 1].sex,tmp3);
strcpy( ps->data[j + 1].address,tmp4);
ps->data[j + 1].age=tmp5;
}
}
}
}
printf("排序完成！\n");
}
void destroy(struct contact* ps)
{
free(ps->data);
ps->data = NULL;
}
void save(struct contact* ps)
{
FILE* pfwrite = fopen("contact.dat", "wb");
if (pfwrite == NULL)
{
printf("%s\n", strerror(errno));
return ;
}
//写通讯录中的数据到文件中
int i = 0;
for (i = 0; i < ps->size; i++)
{
fwrite(&(ps->data[i]), sizeof(struct people_information), 1, pfwrite);
}
fclose(pfwrite);
pfwrite = NULL;
}
源文件test.c
#define _CRT_SECURE_NO_WARNINGS 1
//功能：
//一、存放1000个系人信息，信息包括：姓名、电话、性别、住址、年龄
//二、增加联系人信息
//三、删除指定联系人信息
//四、查找联系人信息
//五、修改联系人信息
//六、显示全部联系人信息
//七、排序
#include<stdio.h>
#include"contact.h"
void menu()
{
printf("******************************\n");
printf("****1.add 2.delete****\n");
printf("****3.search 4.modify****\n");
printf("****5.show 6.sort ****\n");
printf("****7.save 0.exit ****\n");
printf("******************************\n");
}
int main()
{
int input = 0;
//创建通讯录
struct contact con;//con就是通讯录，存放1000个信息
//初始化通讯录
initcontact(&con);
do
{
menu();
printf("请选择:>");
scanf("%d", &input);
switch (input)
{
case ADD:
add(&con);//增加联系人信息
break;
case DEL:
my_delete(&con);//删除指定联系人信息
break;
case SEARCH:
search(&con);//查找联系人信息
break;
case MODIFY:
modify(&con);//修改联系人信息
break;
case SHOW:
show(&con);//显示全部联系人信息
break;
case SORT:
sort(&con);//排序
break;
case EXIT:
printf("退出通讯录\n");
//销毁通讯录
destroy(&con);
break;
case SAVE:
save(&con);
default:
printf("选择错误\n");
break;
}
} while(input);
return 0;
}
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