手机号c语言编程号怎么输入

⑴ C语言编写程序，建立phone.txt文件，由键盘输入5个人的姓名、手机号码、家庭住址，写入该文件中。

#include <stdio.h>
#include <stdlib.h>
struct data
{
char name[20];
char phone[20];
char address[20];
} people[5];
int main()
{
FILE *p;
int i;
p=fopen("D:\\phone.txt","w");
if(p==NULL)
{
printf("打开文件失败\n");
exit(0);
}
for(i=1;i<=5;i++)
{
printf("输入第%d个人的信息，空格顿开，回车结束\n",i+1);
scanf("%s%s%s",people[i].name,people[i].phone,people[i].address);
fwrite(&people[i],sizeof(people[i]),1,p);
fprintf(p,"\n");
}
fclose(p);
return 0;
}

⑵ 用C语言编写手机通讯录程序

以前写了一个简单的：
#include <stdio.h>
#include <stdlib.h> /*与malloc.h差不多*/
#include <string.h>
#include <iostream>
using namespace std;
#define maxlen 15
struct persons
{int num; /*定义结构体数组用于缓存数据*/
char name[20];
char e_addr[20];
char tel_no[15];
char sim_no;
char arch;
}persons[maxlen];

typedef struct lnode
{ /*通讯录结构中结点的定义*/
int num;
char name[20];
char e_addr[20];
char tel_no[15];
char sim_no;
char arch;
struct lnode *next;
}listnode,*linklist;

linklist head=NULL,r=NULL; /*定义头指针和尾指针*/
listnode *s,*p0,*p1,*p2,*p3,*p4,*p5,*p6,*p7,*p8,*p9;
int i;
char name1[10],ch;
char tel_no1[15];
char arch1;
char sim_no1;
char e_addr1[20];
char s1[20];
FILE *fp; /*定义文件指针*/

void creat() /*将文件的信息读入结构体数组在转存入链表中*/
{ int j;
long k;
fp=fopen("数据文件.txt","r t"); /*打开文件*/
if(fp!=NULL)
{for(i=0;i<=maxlen;i++ )
{ j=fgetc(fp);
if(j==EOF)
return;
k=i;
fseek(fp,k*sizeof(struct persons),0); /*读取一个人的信息*/
fread(&persons[i],sizeof(struct persons),1,fp);

s=(linklist)malloc(sizeof(listnode)); /*装存入链表中*/
s->num=persons[i].num;
strcpy(s->name,persons[i].name);
strcpy(s->e_addr,persons[i].e_addr);
strcpy(s->tel_no,persons[i].tel_no);
s->sim_no=persons[i].sim_no;
s->arch=persons[i].arch;
if(head==NULL) /*用尾插法将其插入链表中*/

else
{r->next=s;
r=s;r->next=NULL;
}
}fclose(fp);
}
else
{ fp=fopen("数据文件.txt","w"); /*不能打开另开辟一个文件*/
i=1;
}
}

void Show()

void Delete()

void Input() /*向.通讯录中输入一个人的信息*/
{ s=(linklist)malloc(sizeof(listnode));
printf("\n\n\t请输入该用户的信息:");
printf("姓名:");
scanf("%s",&s->name);
printf("电话号码:");
scanf("%s",&s->tel_no);
printf("单键拨号:");
scanf("%s",&s->sim_no);
printf("E-mail地址:");
scanf("%s",&s->e_addr);
printf("类别:");
scanf("%s",&s->arch);

if(head==NULL)printf("\n\n");
else
{p8=head;
while(p8!=NULL&&strcmp(s->name,p8->name)!=0&&strcmp(s->tel_no,p8->tel_no)!=0)
p8=p8->next;
if(p8!=NULL)
{printf("您添加的用户已存在!");
free(s);}}
if(head==NULL)
{
s->next = 0;
head=s;
r = s;
}
else
{
s->next = 0;
r->next = s;
r = s;

}
}
void Alter()

int main()
{
system("color a");
creat();
do
{
printf("\n\n\t\t请选择操作:");
printf("\n\t\t1.显示通讯录");
printf("\n\t\t2.删除通讯录");
printf("\n\t\t3.添加通讯录");
printf("\n\t\t4.编辑通讯录");
printf("\n\n\n");
printf("\t请选择:");
cin>>ch;
switch(ch)
{ case '1': Show(); /*用单条件多选择语句实现调用与循环*/
break;
case '2': Delete();
break;
case '3': Input();
break;
case '4': Alter();
break;
fclose(fp);
exit(0);
break;
default:
printf("\n\t The num should 1-6!!! \n");
break;
}
}
while(1);
}

⑶ c语言编程题要求用函数和指针求判断一个字符串是否为手机号，不 （手机要是11为什么全为阿拉伯字母）

#include<stdio.h>
#include<string.h>

int istelnum(char *num)
{
int i;

for(i=0;num[i];i++)
{
if(!(num[i]>='0'&&num[i]<='9'))
return 0;
}
return 11==strlen(num);
}

int main()
{
char num[16];

printf("请输入手机号：");
gets(num);
if(istelnum(num))
puts("是有效的手机号\n");
else
puts("不是有效的手机号\n");
return 0;
}

⑷ C语言中怎么输入数字和字母

需要准备的材料分别有：电脑、C语言编译器。

1、首先，打开C语言编译器，新建一个初始.cpp文件，例如：test.cpp。

⑸ 用C语言编写输入输出手机号码

char a[100];
scanf("%s",a);

⑹ c语言编程 建立一通讯录，输入姓名，电号码，住址等信息，然后对通信...

#include<stdio.h>
#include<string.h>
struct person
{
char name[8];
char tel[15];
char addr[50];
};
char filename[20];
FILE *fp;
void creat();
void output();
void search();
void append();
void modify();
void deleted();
int main()
{
int m;
creat();
while(1)
{
printf("\n\n添加，请按1");
printf("\n查找，请按2");
printf("\n修改，请按3");
printf("\n删除，请按4");
printf("\n输出，请按5");
printf("\n退出，请按0\n");
scanf("%d",&m);
if(m>=0&&m<=5)
{
switch(m)
{
case 1: append();
break;
case 2: search();
break;
case 3: modify();
break;
case 4: deleted();
break;
case 5: output();
break;
case 0: break;
}
printf("\n\n操作完毕，请再次选择！");
}
else
printf("\n\n选择错误，请再次选择！");
}
return 0;}

void creat()
{
struct person one;
long s1;
printf("\n请输入通讯簿名：");
scanf("%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("\n不能建立通讯簿！");

}
fprintf(fp,"%-10s%-20s%-50s\n","姓名","电话号码","住址");
printf("\n请输入姓名、电话号码及住址（以0结束）\n");
scanf("%s",one.name);
while(strcmp(one.name,"0"))
{
scanf("%s%s",one.tel,one.addr);
fprintf(fp,"%-10s%-20s%-50s\n",one.name,one.tel,one.addr);
scanf("%s",one.name);
}
fclose(fp);
}
void output()
{
struct person one;
if((fp=fopen(filename,"r"))==NULL)
{
printf("\n不能打开通讯簿！");

}
printf("\n\n%20s\n","通 讯 簿");
while(!feof(fp))
{
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.addr);
printf("%-10s%-20s%-50s",one.name,one.tel,one.addr);
}
fclose(fp);
}
void append()
{
struct person one;
if((fp=fopen(filename,"a"))==NULL)
{
printf("\n不能打开通讯簿！");

}
printf("\n请输入添加的姓名、电话号码及住址\n");
scanf("%s%s%s",one.name,one.tel,one.addr);
fprintf(fp,"%-10s%-20s%-50s\n",one.name,one.tel,one.addr);
fclose(fp);
}
void search()
{
int k=0;
char namekey[8];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen(filename,"rb"))==NULL)
{
printf("\n不能打开通讯簿！");

}
while(!feof(fp))
{
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.addr);
if(!strcmp(namekey,one.name))
{
printf("\n\n已查到，记录为：");
printf("\n%-10s%-18s%-50s",one.name,one.tel,one.addr);
k=1;
}
}
if(!k)
printf("\n\n对不起，通讯簿中没有此人的记录。");
fclose(fp);
}
void modify()
{
int m,k=0;
long offset;
char namekey[8];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{
printf("\n不能打开通讯簿！");

}
while(!feof(fp))
{
offset=ftell(fp);
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.addr);
if(!strcmp(namekey,one.name))
{
k=1;
break;
}
}
if(k)
{
printf("\n已查到，记录为：");
printf("\n%-10s%-18s%-50s",one.name,one.tel,one.addr);
printf("\n请输入新姓名、电话号码及住址：");
scanf("%s%s%s",one.name,one.tel,one.addr);
fseek(fp,offset,SEEK_SET);
printf("%ld",ftell(fp));
fprintf(fp,"%-10s%-20s%-50s\n",one.name,one.tel,one.addr);
}
else
printf("\n对不起，通讯簿中没有此人的记录。");
fclose(fp);
}
void deleted()
{
int m,k=0,flag;
long offset1,offset2;
char namekey[8], valid[4];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{
printf("\n不能打开通讯簿！");

}
while(!feof(fp))
{
offset1=ftell(fp);
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.addr);
if(!strcmp(namekey,one.name))
{
k=1;
break;
}
}
if(k)
{
printf("\n已查到，记录为");
printf("\n%-10s%-18s%-50s",one.name,one.tel,one.addr);
printf("\n确实要删除,按1；不删除，按0：");
scanf("%d",&m);
if(m)
{
fseek(fp,offset1,SEEK_SET);
fprintf(fp,"%-10s%-20s%-50s\n","","","");
}
}
else
printf("\n对不起，通讯簿中没有此人的记录。");
fclose(fp);
}
在vc6.0 上可以使用，希望对你有用

⑺ C语言编写一个简短的通讯录，输入联系人得知电话号码和性别等基本信息就可以，谢谢！

我重写一个哦

classtongxunlu{
stringa;
stringb;
stringc;
}
tongxunlumyfriend[2];
cin>>myfriend[0].a>>myfriend[0].b>>myfriend[0].c;//给我的朋友赋值，就是添加信息
cout<<myfriend[0].a<<myfriend[0].b<<myfriend[0].c;//输出

这就是给他注入信息然后在取出来个过程，注释写得很详细，根据你的需要自己修改吧，这个是我以前回答别人的时候写的

⑻ C语言这个程序为何电话号码ph用int 和"%d"输入输出就不对而用 char和"%s"就可以，电话不全是数字吗

如果电话号码小的话(8位)
scanf("%s%s%d",c[i].name,c[i].address,c[i].ph); 应该是
scanf("%s%s%d",c[i].name,c[i].address,&c[i].ph);
输出没错