【SzNOI语法百题】【d063】找对调数

#include <stdio.h>    int main(int argc,char **argv)  {      int a,b,c,d;      int val,i;      int flag = 0;        scanf("%d",&val);        a = val/10;      b = val%10;        for(i = 10; i <= 99; i++){          c = i/10;          d = i%10;          if(d != 0 && b != 0)              if( (val + i) == (10 * b + a + 10 * d + c) && (val != 10 * d + c) )                      {                          printf("%d\n",i);                          flag = 1;                      }        }        if(!flag)          printf("No!");        return 0;  }