# fmod() function with example in C++

C++ fmod() function: Here, we are going to learn about the fmod() function with example of cmath header in C++ programming language?
Submitted by IncludeHelp, on April 27, 2019

## C++ floor() function

fmod() function is a library function of cmath header, it is used to find the remainder of the division, it accepts two numbers (numerator and denominator) and returns the floating-point remainder of numerator/denominator which is rounded towards to zero.

Syntax of fmod() function:

```    fmod(n, m);
```

Parameter(s): n,m – are the numbers (numerator, denominator) to be used to calculate the remainder of the division.

Return value: double – it returns double type value that is floating-point remainder of the division.

Example:

```    Input:
float n = 5.3;
float m = 2;

Function call:
fmod(n,m);

Output:
1.3
```

### C++ code to demonstrate the example of fmod() function

```// C++ code to demonstrate the example of
// fmod() function

#include <iostream>
#include <cmath>
using namespace std;

// main() section
int main()
{
float n;
float m;
float result;

//input the value of
//numerator and denominator
cout<<"Enter the value of numerator  : ";
cin>>n;
cout<<"Enter the value of denominator: ";
cin>>m;

//finding the remainder
result = fmod(n,m);
cout<<"floating-point remainder of "<<n<<"/"<<m<<" is: ";
cout<<result<<endl;

return 0;
}
```

Output

```Enter the value of numerator: 5.3
Enter the value of denominator: 2
floating-point remainder of 5.3/2 is: 1.3

Second run:
Enter the value of numerator: 18.5
Enter the value of denominator: 4.2
floating-point remainder of 18.5/4.2 is: 1.7

Third run:
Enter the value of numerator: -36.23
Enter the value of denominator: 24.1
floating-point remainder of -36.23/24.1 is: -12.13

Fourth run:
Enter the value of numerator: 36.23
Enter the value of denominator: -24.1
floating-point remainder of 36.23/-24.1 is: 12.13
```