C++ Modulus Operator

In this tutorial, we will learn about the C++ Modulus Operator with examples. The C++ modulus operator is the % symbol. It returns the remainder of the integer division. We can use this operator with integer operands.

Example

13%3 =  13 – (4*3)

=  13 – 12

=  1

13%3 = 1

C++ Program

Let’s write a simple C++ program and use the modulus operator.

//*******************************
// C++ Modulus Operator
// C++ Tutorials
// www.TestingDocs.com
//*******************************

#include 
using namespace std;

int main()
{
 //Declare integer variables
 int x = 15;
 int y = 10;

 int result = x%y;

 cout << "x = " << x << endl ;
 cout << "y = " << y << endl ;
 cout << "x%y = " << result << endl ;
 return 0;
}

Output

Build and run the program in Code::Blocks. Let’s analyze the program output.

x = 15
y = 10
x%y = 5

The variable x has 15 and the variable y has 10. When we divide 15 with 10 we get 5 as the remainder.

The result of 15%10 or x%y is 5.

#

Let’s look at another example. Let’s assume the following variables:

int x = 12;

int y = 4;

12 is divisible by 4, so we get 12%4 = 0. This is a useful condition to check if the number is divisible by another number.

Exercises

# What would be the output of 16%6?

# Write a simple C++ program to check if a number is divisible by 3.  Hint:

if(x%3 ==0)
cout << “The number is divisible by 3 ” << endl ;

—

C++ Tutorials

C++ Tutorials on this website:

https://www.testingdocs.com/c-coding-tutorials/

For more information on the current ISO C++ standard

https://isocpp.org/std/the-standard