/*
 * FunnyMath2 - signed vs. unsigned
 */
#include <stdio.h>

/*  -Ian! D. Allen - idallen@idallen.ca - www.idallen.com
 *  License: GPL Version 3 or later
 */
	int
main( void ){
    signed int sx = 2000000000;
    signed int sy = 2000000001;
    signed int sz = sx + sy;
   
    unsigned int ux = 2000000000;
    unsigned int uy = 2000000001;
    unsigned int uz = ux + uy;
   
    printf("sz is 0x%X which could be %d or %u\n", sz, sz, sz);
    printf("uz is 0x%X which could be %d or %u\n", uz, uz, uz);
    /*
     * OUTPUT:
     *  sz is 0xEE6B2801 which could be -294967295 or 4000000001
     *  uz is 0xEE6B2801 which could be -294967295 or 4000000001
     */

    /*
     * Both sz and uz contain the same bit pattern 0xEE6B2801.
     * Signed sz interprets the bits as -294967295(10).
     * Unsigned uz interprets the bits as 4000000001(10).
     */

    if ( sz < 0 )
            printf("sz is less than zero\n");
    else   
            printf("sz is not less than zero\n");
   
    if ( uz < 0 )
            printf("uz is less than zero\n");
    else   
            printf("uz is not less than zero\n");
    /*
     * OUTPUT:
     *  sz is less than zero
     *  uz is not less than zero
     */
    return 0;
}