Leap Year function NOT working but should?

[gretty]

Hi
I have a bool function that should find whether a year was a leap year or not. But the function is not returning the correct years as a leap year.

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

bool is_leapyear(int year);


int main () {

	int a = 2000, b = 2004, c = 2005, d = 2007;

	if (is_leapyear(a))
	{
		cout << a << " is a LEAP year" << endl;
	}
	else
		cout << a << " is NOT a LEAP year" << endl;

	if (is_leapyear(b))
	{
		cout << b << " is a LEAP year" << endl;
	}
	else
		cout << b << " is NOT a LEAP year" << endl;

	if (is_leapyear(c))
	{
		cout << c << " is a LEAP year" << endl;
	}
	else
		cout << c << " is NOT a LEAP year" << endl;

	if (is_leapyear(d))
	{
		cout << d << " is a LEAP year" << endl;
	}
	else
		cout << d << " is NOT a LEAP year" << endl;

	return 0;
}

bool is_leapyear(int year)
{
	bool leap_yr = false;

	if (((year % 4) == 0) && ((year % 100) != 0) || year % 16 == 0)
	{
		leap_yr = true;
	}

	else
		leap_yr = false;


}

output for program is:

2000 is NOT a LEAP year
2004 is a LEAP year
2005 is a LEAP year
2007 is a LEAP year

[Yiuca]

is_leapyear(int) must return a value, it doesn't it only sets a bool value but doesn't return it. I added the return keyword before leap_yr = true; & leap_yr = false;, & my output were

2000 is a LEAP year
2004 is a LEAP year
2005 is NOT a LEAP year
2007 is NOT a LEAP year

Process returned 0 (0x0) execution time : 0.135 s
Press any key to continue.

[gretty]

Thanks! Its so obvious :P I should have known. Thanks for your help :)