// CSE 374 lecture 8
// Simple uses of preprocessor
// (compile with gcc -E to see how the preprocessor rewrites the
// original program)

#include <stdio.h>

#define TRUE 1
#define FALSE 0

int main() {

  while (TRUE) {

    int number;
    printf("Enter int: ");
    scanf("%d", &number);

    // if the user enters a negative number, break the loop
    if (number < 0) {
      break;
    }

  }
  return 0;
}