Thread: if statement

I came across this program in my book and read about it.

Code:

#include <iostream>

using namespace std;

int main()
{
	long number=0;
	cout << endl
		 << "Enter an integer number less than 2 billion: ";
	cin >> number;

	if(number % 2L)
		cout << endl
			 << "your number is odd." << endl;

	else
		cout << endl
		     << "your number is even." << endl;
	return 0;
}

I don't quite understand the if(number % 2L) statement really means. A ran on google and went to a couple open chats about it and got nothing. All I can make of this is.

The if statment runs starts the if loop.

Number is the variable.

What does the % 2L mean?