What does the '%' operator mean?

Question

I have next code

int a,b,c;
b=1;
c=36;
a=b%c;

What does \"%\" operator mean?

Answer 1

Okay well I did know this till just trying on a calculator and playing around so basically:
5 % 2.2 = 0.6 is like saying on a calculator 5/2.2 = 2.27 then you multiply that .27 times the 2.27 and you round and you get 0.6. Hope this helps, it helped me =]

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Answer 2

It is modulus operator

using System;
class Test
{
    static void Main()
    {

        int a = 2;
        int b = 6;

        int c = 12;
        int d = 5;

        Console.WriteLine(b % a);
        Console.WriteLine(c % d);
        Console.Read();
    }
}

Output:

0
2

Answer 3

% is the remainder operator in many C-inspired languages.

3 % 2 == 1
789 % 10 = 9

It's a bit tricky with negative numbers. In e.g. Java and C#, the result has the same sign as the dividend:

-1 % 2 == -1

In e.g. C++ this is implementation defined.

See also

• Wikipedia/Modulo operation

References

• MSDN/C# Language Reference/% operator

Answer 4

It's is modulus, but you example is not a good use of it. It gives you the remainder when two integers are divided.

e.g. a = 7 % 3 will return 1, becuase 7 divided by 3 is 2 with 1 left over.

Answer 5

It is the modulo (or modulus) operator:

The modulus operator (%) computes the remainder after dividing its first operand by its second.

For example:

class Program
{
    static void Main()
    {
        Console.WriteLine(5 % 2);       // int
        Console.WriteLine(-5 % 2);      // int
        Console.WriteLine(5.0 % 2.2);   // double
        Console.WriteLine(5.0m % 2.2m); // decimal
        Console.WriteLine(-5.2 % 2.0);  // double
    }
}

Sample output:

1
-1
0.6
0.6
-1.2

Note that the result of the % operator is equal to x – (x / y) * y and that if y is zero, a DivideByZeroException is thrown.

If x and y are non-integer values x % y is computed as x – n * y, where n is the largest possible integer that is less than or equal to x / y (more details in the C# 4.0 Specification in section 7.8.3 Remainder operator).

For further details and examples you might want to have a look at the corresponding Wikipedia article:

Modulo operation (on Wikipedia)