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/*
* Copyright (C) 2014 Tomasz Kramkowski <tk@the-tk.com>
*
* This program is free software. It is licensed under version 3 of the
* GNU General Public License.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [http://www.gnu.org/licenses/].
*/
// Trying to see how different ways of odd checking compile into source.
#include<stdio.h>
_Bool isOdd( int );
int main ( int argc, char *argv[] ) {
if ( argc == 2 ) {
printf("%s\n", isOdd( atoi( argv[1] ) ) ? "true" : "false" );
return 0;
} else {
printf("Usage: '%s <number>'\n", argv[0]);
return 1;
}
}
_Bool isOdd( int n ) {
// Bitwise and with LSB to check if number is odd or even.
// LSB == 0 => even
// LSB == 1 => odd
return n & 1;
}
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