C# Modulus Operator

I wasn't quite sure what to expect, but I couldn't figure out how the remainder was 3.

So you have 3 cookies, and you want to divide them equally between 4 people.

Because there are more people than cookies, nobody gets a cookie (quotient = 0) and you've got a remainder of 3 cookies for yourself. :)

3 mod 4 is the remainder when 3 is divided by 4.

In this case, 4 goes into 3 zero times with a remainder of 3.

I found the answer confusing and misleading.....

Modulus is what is left over IN THE FIRST NUMBER after dividing the second into it as many times as possible.

1 % 1 = 0 because after dividing 1 into 1, one time, there's nothing left
2 % 1 = 0 because after dividing 1 into 2, two times, there's nothing left
1 % 2 = 1 because 2 won't go into 1, so 1 is left

I already think that the user may have understood the answers. Because there are so many good programmer.. in simple wording % tells you the reminder after dividing with your own integer.

e.g.

int a = int.Parse(Console.ReadLine());
int b = a % 2;

Now your input 13, it will give 1, because after diving 13 by 2 remainder is 1 in simple mathematics. Hope you got that.

As explained by others, but if you don't want to use the "mod" operator. Here is the equation to figure out the remainder of "a" divided by "n"

a-(n* int(a/n))

Another "as explained by others", but if you're curious about several more ways to do modulus (or use an alternative method), you can read this article which benchmarks a few different ways.

Basically, the fastest way is the good old fashioned modulus operator, similar to:

if (x % threshold == some_value)
{
    //do whatever you need to
}