對一個數逆序輸出

# include<stdio.h>

int main()
{
   int x;
   scanf("%d",&x);
   
   do{
       int d = x%10;
       printf("%d",d);
       if(x>9){
           printf(" ");
       }
       x /= 10;
   }while( x > 0 );
   printf("\n");
   
   return 0;
}