Modulo Operator

Q1. Define mod.

Answer:

In C/C++ programming languages, mod refers to the mathematical operation in which one number is divided by another, and the remainder is returned.

It can be performed using modulo operator (%).

Q2. What is mod arithmetic?

Answer:

Mod arithmetic refers to the process in which a number keeps wrapping around a certain point in such a way that it is always less than that certain point. For example,

Consider the number n = 10 and the point p = 20.
When we increment n 10 times, it will be n = 20 but in modular arithmetic, it should ways be smaller that the specified point.

One way to do that is to use modulo operator as:

n++;
n  = n % p;

To learn more about modular aritimatic, refer to the article – Modular Arithmatic

Q3. What is the difference between modulo and divide operator?

Answer:

The major difference between modulo and division operator is that:

• Modulo Operator (%) returns the remainder after dividing one number with other.
• Divide Operator (/) returns the quotient after dividing one number with other.

In C or C++, the modulo operator (also known as the modulus operator), denoted by %, is an arithmetic operator. The modulo division operator produces the remainder of an integer division which is also called the modulus of the operation.