Thread: simple Recursion program - strange output

Code:

void numbers(int one, int two) {
  printf( "%i\n", one );
  if ( one != two ) {
    if ( one > two ) {
      one--;
    } else if ( two > one ) {
      one++;
    };
    numbers(one,two);
  };
};

structure:

Recursion (computer science) - Wikipedia