/*
 * A simple program that demonstrates overflow in signed and unsigned ints.
 *
 */

#include <stdio.h>

int
main(int argc, char* argv[])
{
  int a = 0x7FFFFFFF;
  unsigned int b = 0xFFFFFFFF;
  
  printf("a has hex value       a = 0x%x\n", a);
  printf("b has hex value       b = 0x%x\n", b);
  printf("Demonstration of overflow:\n");
  printf("a is an int.          a = %d\ta+1 = %d\n", a, a+1);
  printf("b is an unsigned int. b = %u\tb+1 = %u\n", b, b+1);
  printf("What happens when we interpret a as an unsigned int?\n");
  printf("a as unsigned int:    a = %u\ta+1 = %u\n", a, a+1);
  printf("What happens when we interpret b as an int?\n");
  printf("b as int:             b = %d\tb+1 = %d\n", b, b+1);

  return 0;
}