a logic questions

[zelin]

Guys someone asked a question...

if there are two integers in some variables etc.. how can u find which one is smaller and which one is bigger provided u cant use relation operators

if anyone got any idea do tell me ASAP

[hamsterman]

You could subtract one form another and check whether the result is negative by checking the most significant bit.

[Mathhead200]

That sounds fun!

#include <iostream>
#include <limits>

using namespace std;

int max(int a, int b) {
	int c = a - b;
	c &= numeric_limits<int>::min();
	return c ? b : a;
}

int main(int argc, char *argv[]) {
	if( argc < 2 ) {
		cerr << "Supply at least 1 arguments." << endl;
		return 1;
	}
	
	int m = atoi(argv[1]);
	for( int i = 2; i < argc; i++ )
		m = max( m, atoi(argv[i]) );
	cout << "The maximum argument value is " << m << endl;
	
	return 0;
}