Hi

The code which we submit are being tested on 64bit or 32bit machines ? Does it make any difference in a computationally intensive code if 32 bit or 64 bit is used.

CODE :

#include <ctime>
#include <iostream>
using namespace std;
void test(int end) {
	clock_t startInt = clock();
	int a = 0;
	for (int i = 0; i < end; i++) {
		a++;
	}
	clock_t endInt = clock();
	cout << "int       " << a << " sizeof " << sizeof(int) << " " << (double) (endInt - startInt) / CLOCKS_PER_SEC << endl;

	clock_t startLong = clock();
	long b = 0;
	for (long i = 0; i < end; i++) {
		b++;
	}
	clock_t endLong = clock();
	cout << "long      " << b << " sizeof " << sizeof(long) << " " << (double) (endLong - startLong) / CLOCKS_PER_SEC << endl;

	clock_t startLongLong = clock();
	long long c = 0;
	for (long long i = 0; i < end; i++) {
		c++;
	}
	clock_t endLongLong = clock();
	cout << "long long " << c << " sizeof " << sizeof(long long) << " " << (double) (endLongLong - startLongLong) / CLOCKS_PER_SEC << endl;
}

int main() {
	test(2147483647);
	test(1000000);
}

int       2147483647 sizeof 4 11.965
long      2147483647 sizeof 4 11.716
long long 2147483647 sizeof 8 27.238
int       1000000 sizeof 4 0.015
long      1000000 sizeof 4 0
long long 1000000 sizeof 8 0.016

USING 32 BIT VISTA C++ ECLIPSE CDT WITH CYGWIN