竖式问题

#include <stdio.h>#include <string.h>int main(){int i,ok,abc,de,x,y,z,count=0;char s[20],buf[99];scanf("%s",s);for(abc=111;abc<=999;abc++)  for(de=11;de<=99;de++)  {  x=abc*(de%10);  y=abc*(de/10);  z=abc*de;  sprintf(buf,"%d%d%d%d%d",abc,de,x,y,z);  ok=1;  for(i=0;i<strlen(buf);i++)  {  if(strchr(s,buf[i])==NULL)  ok=0;  }  if(ok)  {  printf("<%d>\n",++count);  printf("%5d\nX%4d\n-----\n%5d\n%4d\n-----\n%5d\n\n",abc,de,x,y,z);  }    }    printf("The number of solutions=%d\n",count);return 0;}