#include <cstdio>

int main(int argc, char *argv[]) {

  for(;;) {
    int q;

    try {
      printf("Enter a number 0..9: ");
      int k = scanf("%d", &q );

      if(k == 0) {
	scanf("%*s");
	throw "value is not a number";
      }
    
      if( q < 0 || q > 9 ) {
	throw q;
      }
    }
    catch( const char *s ) {
      printf("Error: %s\n", s);
      continue;
    }
    catch( int v ) {
      printf("Error: number %d is out of range (0..9)\n", v);
      continue;
    }

    if( q == 0 )
      break;
  }
    
  printf("Terminating\n");

  return(0);
}