通讯录（C语言、文件保存）

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contact.h

#ifndef __CONTACT_H__
#define __CONTACT_H__

#define NAME_LEN 10
#define SEX_LEN 6
#define TELE_LEN 12
#define ADDR_LEN 20
#define MAX_PEO 1000

typedef struct PEO
{
	char name[NAME_LEN];
	int age;
	char sex[SEX_LEN];
	char tele[TELE_LEN];
	char addr[ADDR_LEN];
}Peo, *PPEO;

typedef struct Contact
{
	Peo nb[MAX_PEO];
	int count;//记录有效个数
}PCON,*Pcon;

void add_peo(Pcon pcon);
void del_peo(Pcon pcon);
void search(Pcon pcon);
void modify(Pcon pcon);
void show(Pcon pcon);
void clear(Pcon pcon);
void save(Pcon pcon);
void read(Pcon pcon);
void init(Pcon pcon);

#endif

contact.c

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

void add_peo(Pcon pcon)
{
	if (pcon->count <= MAX_PEO)
	{
		printf("请输入姓名：");
		scanf("%s", pcon->nb[pcon->count].name);
		printf("请输入年龄：");
		scanf("%d", &pcon->nb[pcon->count].age);
		printf("请输入性别：");
		scanf("%s", pcon->nb[pcon->count].sex);
		printf("请输入电话：");
		scanf("%s", pcon->nb[pcon->count].tele);
		printf("请输入地址：");
		scanf("%s", pcon->nb[pcon->count].addr);
		pcon->count ++;
		printf("添加成功！\n");
	}
	else
		printf("电话本已满！");
}

void show(Pcon pcon)
{
	int i=0;
	printf("姓名  年龄    性别           电话             地址\n");
	for(i=0;i<pcon->count;i++)
	{
		printf("%s%8d%8s%15s%18s\n",pcon->nb[i].name,pcon->nb[i].age,pcon->nb[i].sex,pcon->nb[i].tele,pcon->nb[i].addr);
	}
}

int find(char *c,Pcon pcon)
{
	int i=0;
	for(;i<pcon->count;i++)
	{
		if(strcmp(c,pcon->nb[i].name)==0)
			return i;
			
	}
	return -1;
}
void del_peo(Pcon pcon)
{
	char nam[NAME_LEN];
	int index=0;
	printf("请输入你想删除的人：");
	scanf("%s",nam);
	index = find(nam,pcon->nb[index].name);
	for(;index<=pcon->count-1;index++)
	{
		pcon->nb[index]=pcon->nb[index+1];
	}
	pcon->count--;
	printf("删除成功！\n");
}

void search(Pcon pcon)
{
	char nam[NAME_LEN];
	int i=0;
	printf("请输入你想查找的人：");
	scanf("%s",nam);
	i = find(nam,pcon->nb[i].name);
	printf("姓名  年龄    性别           电话               地址\n");
	printf("%s%8d%8s%15s%20s\n",pcon->nb[i].name,
			pcon->nb[i].age,pcon->nb[i].sex,
			pcon->nb[i].tele,pcon->nb[i].addr);
}

void modify(Pcon pcon)
{
	char nam[NAME_LEN];
	int i=0;
	printf("请输入你想修改的人：");
	scanf("%s",nam);
	i = find(nam,pcon->nb[i].name);
	pcon->nb[i] = pcon->nb[-1];
	printf("请输入姓名：");
	scanf("%s", pcon->nb[i].name);
	printf("请输入年龄：");
	scanf("%d", &pcon->nb[i].age);
	printf("请输入性别：");
	scanf("%s", pcon->nb[i].sex);
	printf("请输入电话：");
	scanf("%s", pcon->nb[i].tele);
	printf("请输入地址：");
	scanf("%s", pcon->nb[i].addr);
	printf("添加成功！\n");
}

void clear(Pcon pcon)
{
	pcon->count = 0;
}

void save(Pcon pcon)
{
	int i = 0;
	FILE *pfwrite = fopen("contact.txt","w");
	
	if(pfwrite == NULL)
	{
		perror("contact.txt");
		exit(EXIT_FAILURE);
	}
	for(i= 0;i<pcon->count;i++)
	{
		fwrite(&(pcon->nb[i]),sizeof(Peo),1,pfwrite);
	}
	fclose(pfwrite);
}

void read(Pcon pcon)
{
	int i = 0;
	FILE *pfread = fopen("contact.txt","r");	
	if(pfread == NULL)
	{
		perror("contact.txt");
		exit(EXIT_FAILURE);
	}
	while(fread(&(pcon->nb[i]),sizeof(Peo),1,pfread)==1)
	{
		i++;
	}
	pcon->count = i;
	for(i= 0;i<pcon->count;i++)
	{
		fwrite(&(pcon->nb[i]),sizeof(Peo),1,pfread);
	}
	fclose(pfread);
}

main.c

#include <stdio.h>
#include "contact.h"


void print_menu()
{
	printf("****************************\n");
	printf("*** 1>add       2>del    ***\n");
	printf("*** 3>show      4>search ***\n");
	printf("*** 5>modify    6>clear  ***\n");
	printf("*** 7>save      8>read  ***\n");
	printf("****************************\n");
}

int main()
{
	PCON  con;
	int input = 1;
	con.count = 0;
	while (input)
	{
		print_menu();
		printf("请选择:");
		scanf("%d", &input);
	//	system("cls");
		switch (input)
		{
		case 1:
			add_peo(&con);
			break;
		case 2:
			del_peo(&con);
			break;
		case 3:
			show(&con);
			break;
		case 4:
			search(&con);
			break;
		case 5:
			modify(&con);
			break;
		case 6:
			clear(&con);
			break;
		case 7:
			save(&con);
			break;
		case 8:
			;
			break;
		default:
			break;
		}
	}

	return 0;
}

通讯录（C语言、文件保存）

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原文地址：http://blog.csdn.net/lolita0917/article/details/46289809