# hypot() function with example in C++

C++ hypot() function: Here, we are going to learn about the hypot() function with example of cmath header in C++ programming language?
Submitted by IncludeHelp, on April 26, 2019

## C++ hypot() function

hypot() function is a library function of cmath header, it is used to find the hypotenuse of the given numbers, it accepts two numbers and returns the calculated result of hypotenuse i.e. sqrt(x*x + y*y).

Syntax of hypot() function:

```    hypot(x, y);
```

Parameter(s): x, y – numbers to be calculated hypotenuse (or sqrt(x*x + y*y))

Return value: double – it returns double value that is the result of the expression sqrt(x*x + y*y).

Example:

```    Input:
float x = 10.23;
float y = 2.3;

Function call:
hypot(x, y);

Output:
10.4854
```

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

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

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

// main code section
int main()
{
float x = 10.23;
float y = 2.3;

// calculate the hypotenuse
float result = hypot(x, y);
cout<<"hypotenuse of "<<x<<" and "<<y<<" is = "<<result;
cout<<endl;

//using sqrt() function
result = sqrt((x*x + y*y));
cout<<"hypotenuse of "<<x<<" and "<<y<<" is = "<<result;
cout<<endl;

return 0;
}
```

Output

```hypotenuse of 10.23 and 2.3 is = 10.4854
hypotenuse of 10.23 and 2.3 is = 10.4854
```

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