竖式问题

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

int main(){
    int count =0;
    char s[20],buf[99];
    scanf("%s",s);
    for(int abc=111;abc<=999;abc++)
      for(int de ==11;de<=99;de++)
      {
      	int x = abc*(de%10),y=abc*(de/10),z=abc*de;
      	sprintf(buf,"%d%d%d%d%d",abc,de,x,y,z);
      	int ok =1;
      	for(int 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;
}