#include<stdio.h>
#include"ctype.h"
#define N 1000
main()
{
    FILE *fp;
    char str[N],str1[N],found=0;
    while(1)
    {
    if((fp=fopen("TeleBook.txt","r"))==NULL)
    {
        printf("can,t open TeleBook or do,t have it");
        getch();
        exit(1);
    }

    printf("please input the name you want to search:");
    scanf("%s",str);
    while(!feof(fp))
    {
        fscanf(fp,"%s",str1);
        if(strcmp(str1,str)==0)
        {
            found=1;
            fscanf(fp,"%s",str1);
            fscanf(fp,"%s",str1);
            if(isdigit(str1[0]))
            printf("%s tellphone number is %s\n",str,str1);
            else
            printf("%s tellphone is wrong\n");
            break;

        }
    }
    if(!found) printf("there don't have %s.\n",str);
    fclose(fp);
   }
    getch();
}
TeleBook.txt文件：
aaa 111
bbb 222
ccc 333
运行编译后
aaa
aaa tellphone is wrong
bbb
bbb tellphone is wrong
ccc
ccc tellphone number is 333
为什么输入 aaa 不是输出 aaa tellphone number is 111请高手帮忙解答一下，在这里先谢了！

在线等！急哦，请高手帮忙下。我在这里先谢了！

if(strcmp(str1,str)==0)
        {
            found=1;
            fscanf(fp,"%s",str1);
            fscanf(fp,"%s",str1); /* 删了这些红色语句 */
            if(isdigit(str1[0]))
            printf("%s tellphone number is %s\n",str,str1);
            else
            printf("%s tellphone is wrong\n");
            break;   
        }  
   
·

#include<stdio.h>
#include"ctype.h"
#define N 1000
main()
{
    FILE *fp;
    char str[N],str1[N],found=0;
    while(1)
    {
    if((fp=fopen("TeleBook.txt","r"))==NULL)
    {
        printf("can,t open TeleBook or do,t have it");
        getch();
        exit(1);
    }
    found=0; /* 多加这条赋值语句 */
    printf("please input the name you want to search:");
    scanf("%s",str);
    while(!feof(fp))
     {
      fscanf(fp,"%s",str1);
        if(strcmp(str1,str)==0)
        {
            found=1;
            fscanf(fp,"%s",str1);
            printf("%s tellphone is %s\n",str,str1);
            break;
        }
     }
    if(!found) printf("there don't have %s.\n",str);
    fclose(fp);
   }
    getch();
}

 

[ 本帖最后由 UserYuH 于 2009-10-30 15:57 编辑 ]

来顶UserYuH的；

谢谢大哥帮忙！

if(isdigit(str1[0]))
   printf("%s tellphone number is %s\n",str,str1);
else
   printf("%s tellphone is wrong\n");
   break;
客气，上面这几条语句可以去掉，我在3楼重新编辑去掉了。