How to use Pythagorean theorem in C++?

To use the Pythagorean theorem in C++, you can use the following code:

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
double a, b, c;

cout << "Enter the length of side a: ";
cin >> a;

cout << "Enter the length of side b: ";
cin >> b;

c = sqrt(a*a + b*b);

cout << "The length of side c is: " << c << endl;

return 0;
}