fmod() Function in C++

Syntax of fmod() Function in C++

The syntax of fmod() c++ function is as follows:

Suppose there is numerator a and denominator b then:

The prototype of the fmod function in C++ is:

Parameters of fmod() Function in C++

Parameters of the fmod c++ function are:

• a: it is numerator of type double
• b: it is the denominator of type double

Example

Let us see an example of the fmod C++ function where we will use the fmod() function to return the floating-point remainder.

Output:

What is the fmod() Function in C++?

In daily life, if we want to do a division or any other mathematical calculations, we do it on paper or use a calculator. But, in a programming language, we do calculations using some built-in functions that perform the calculations.

The fmod c++ function is a library function used to find the remainder value when the numerator and denominator are used as a parameter for the division method.

Suppose we have a and b as numerator and denominator, respectively, which goes under the division method; then we will get a decimal remainder rounded towards zero using the fmod() function in C++.

This fmod c++ function is used to return this remainder value. The formula of the fmod function is as follows:

Where t is referred to as the truncated value for the given parameters- numerator and denominator.

Example: Let numerator be 16, and denominator be 3. 16 goes three times in 3, and 1 remains. So, the return value of using the fmod(16, 3) function will be 1.

fmod() function for arguments of different types.

The fmod c++ function can also be used for different arguments in a program. Suppose we take two variables for doing addition in the c++ program. Here, the two variables (arguments) can be of two data types: integer double or float. Refer to More Examples for more detail.

More Examples

Let's look at more examples to understand the fmod C++ function better.

Example 1. fmod() function for arguments of different types

Let us see an example where the arguments are of different types.

Output:

Example 2. fmod c++ function for user input.

Output:

Example 3. In this Example, let us see what happens when the value of the denominator is zero.

Output:

In the above example of the fmod c++ function, we can see that if the value of the denominator is zero, then the output we get is NAN. Its stands for Not a Number.

Conclusion

• fmod function in c++ is used to calculate the remainder of two values: the numerator and the denominator.

• fmod function in c++ is found in the header file named cmath, so we must include this header file at the beginning of the code before using the function.

• If the value of the denominator is zero, then the result will be NAN in the fmod C++ function.