The modulus operator (also informally known as the remainder operator) is an operator that returns the remainder after doing an integer division. Some examples may help illustrate this, as it’s not necessarily intuitive the first time you encounter it: In computing, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another (called the modulus of the operation).. The Arithmetic operators are some of the C Programming Operator, which are used to perform arithmetic operations includes operators like Addition, Subtraction, Multiplication, Division and Modulus. C program to find the remainder of two numbers without using modulus (%) operator  Here, 9 / 4 = 2 and 9 % 4 = 1. For example, the expression a = b = c is parsed as a = (b = c), and not as (a = b) = c because of right-to-left associativity. All these Arithmetic operators in C are binary operators … Modulus only works with integer operands. Calculation. Syntax of C++ Modulus Operator. Notes. C language is rich in built-in operators and provides the following types of operators − == Checks if the values of two operands are equal or not. If yes, then the condition becomes true. The Modulus is the remainder of the euclidean division of one number by another. The modulus operator is useful in a variety of circumstances. Consider, for instance, the following C code: int remainder = value % 1024; It can be translated into: int remainder = value & 0x3FF; In general, if divisor is a power n of two, the modulo operation can be translated to a bitwise AND with divisor-1. Instead of returning the result of the division, the modulo operation returns the whole number remainder. Given two positive numbers a and n, a modulo n (abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the divisor. In your example: 5 divided by 7 gives 0 but it remains 5 (5 % 7 == 5). Formulas to get the remainder, 1) Using modulus (%) operator . Now in some cases you absolutely have to use the modulus operator. Modulo can be easily translated into a bitwise AND if the divisor is a power of two. rem = a-(a/b)*b; Here, a and b are the input numbers. rem = a%b; 2) Without using modulus (%) operator . Modulo (‘%’) (often referred as modulus operator) is an arithmetic operator in all programming languages (C, C++, Python etc etc), that finds the remainder when two numbers are divided. The operator takes two operands and returns the reminder after performing division of dividend by divisor. % is called the modulo operation. An operator is a symbol that tells the compiler to perform specific mathematical or logical functions. It is commonly used to take a randomly generated number and reduce that number to a random number on a smaller range, and it can also quickly tell you if one number is a factor of another. Modulus is the remainder when two numbers are divided. In this tutorial, we shall learn how to use Arithmetic Modulus Operator with values of different datatypes using example programs. For instance, 9 divided by 4 equals 2 but it remains 1. In other words the modulus operator is functionally equivalent to three operations. As another example, 25 / 7 = 3 remainder 4, thus 25 % 7 = 4. The modulus operator. Therefore, 7 % 4 = 3. Well a little thought shows that C = A % B is equivalent to C = A – B * (A / B). The modulus operator - or more precisely, the modulo operation - is a way to determine the remainder of a division operation. For example, 7 / 4 = 1 remainder 3. As a result it’s hardly surprising that code that uses the modulus operator can take a long time to execute. The modulo operation can be calculated using this equation: Operators that are in the same cell (there may be several rows of operators listed in a cell) are evaluated with the same precedence, in the given direction. 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