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#include <stdio.h>

#include <string.h>



#define MAXN 100



int main()

{

    int i,j,len;

    char num[MAXN];//存入long

    char str[MAXN];//存入字符串

    char line[2*MAXN];

    FILE *fw = fopen("a.in","w");

    if(fw == NULL) 

    {

        printf("open file failed!\n");

        return 0;

    }

    //按行写入文件数据

    fputs("12345abcde\n",fw);

    fputs("1111aaaa\n",fw);

    fclose(fw);

    FILE *fr = fopen("a.in","r");

    if(fr == NULL) 

    {

        printf("open file failed!\n");

        return 0;

    }

    //按行读出文件数据

    while(fgets(line,MAXN*2,fr))//按行读入时读入了'\n'字符

    {

        len = strlen(line);

        for(i = 0, j = 0; i < len;   i)

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

                num[j  ] = line[i];

            else break;

        num[j] = '\0';

        for(j = 0; line[i] != '\n'&&i < len;   i)

            str[j  ] = line[i];

        str[j] = '\0';

        printf("%s %s\n",num,str);

    }

    fclose(fr);

    return 0;

}