用C语言编写一个通讯录管理系统

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用C语言编写一个通讯录管理系统,第1张

C语言编写一个通讯录管理系统的源代码如下:

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

/*定义保存通迅录的信息*/

structfriends

{

charname[20]/*名字*/

charprovince[20]/*省份*/

charcity[20]/*所在城市*/

charnation[20]/*民族*/

charsex[2]/*性别M/F*/

intage/*年龄*/

}

扩展资料

1、在C++中应该使用inline内连函数替代宏调用,这样既可达到宏调用的目的,又避免了宏调用的弊端。

2、在C语言两个函数的名称不能相同,否则会导致编译错误。在C++中,函数名相同而参数不同的两个函数被解释为重载。

3、在大型程序中,使函数名易于管理和使用,不必绞尽脑汁地去处理函数名。

#include <cstdio>

#include <cmath>

#include <cstring>

#include <algorithm>

#include <iostream>

#include <cstring>

#include <cmath>

using namespace std

cout<<"如果需要此程序的改版,请私信或加我QQ:2416560314"<<endl

FILE *p,*p1

struct note{

char name[100]

char phone[100]

char mail[100]

}people[1000]

int main()

    {

        int n=0,i,j

        p=fopen("list.txt","r")

        if(p==NULL)

        {

            fclose(p)

            p=fopen("list.txt","w")

            fclose(p)

        }

        while(1)

        {

            n=0

            p=fopen("list.txt","r")

            while(fscanf(p,"%s%s%s",people[n].name,people[n].phone,people[n].mail)!=EOF)

                n++

            fclose(p)

            ///---------------

            int k

            cout<<"输入1读取,输入2输入"<<endl

            cin>>k

            if(k==1)

            {

                cout<<"输入信息"<<endl

                char s[100]

                cin>>s

                bool ok=0

                for(i=0i<strlen(s)i++)

                    if(s[i]>='0'&&s[i]<='9')

                      ok=1

                if(ok==0)

                {

                    //cout<<"通过姓名找到联系人"<<endl

                    //system("pause")

                    bool you=0

                    for(i=0i<ni++)

                        if(strcmp(s,people[i].name)==0)

                            {

                                you=1

                                cout<<"姓名"<<people[i].name<<endl

                                cout<<"电话号码"<<people[i].phone<<endl

                                cout<<"邮箱"<<people[i].mail<<endl

                            }

                    if(you==0)

                      cout<<"没有通过姓名找到联系人"<<endl

                }

                if(ok==1)

                {

                    //cout<<"通过电话找联系人"<<endl

                    //system("pause")

                    bool you=0

                    for(i=0i<ni++)

                        if(strcmp(s,people[i].phone)==0)

                            {

                                you=1

                                cout<<"姓名"<<people[i].name<<endl

                                cout<<"电话号码"<<people[i].phone<<endl

                                cout<<"邮箱"<<people[i].mail<<endl

                            }

                    if(you==0)

                      cout<<"没有通过电话找到联系人"<<endl

                }

            }

            if(k==2)

            {

                p1=fopen("list.txt","a+")

                char ss[1000]

                cout<<"请输入姓名"<<endl

                cin>>ss

                fprintf(p1,"%s\n",ss)

                cout<<"请输入电话"<<endl

                cin>>ss

                fprintf(p1,"%s\n",ss)

                cout<<"请输入邮箱"<<endl

                cin>>ss

                fprintf(p1,"%s\n",ss)

                fclose(p1)

            }

        }

        return 0

    }