#include <stdio.h>

int num, low, high;

int main() {
  while(1) {
    printf("Enter minimum or maximum number (0 to quit): ");
    scanf("%d", &num);
    if(num != 0) {
      low = min(num, 0);
      high = max(num, 0);
      for(int i = low; i <= high; i++) {
        printf("%d ", i);
      }
      printf("\n");
    } else {
      break;
    }
  }
}

int min(int a, int b) {
  return (a < b ? a : b);
}

int max(int a, int b) {
  return (a > b ? a : b);
}