Rectangular triangle

//This program asks you to enter value of each side of the triangle and then sends answer if it's rectangular triangle or even a triangle
#include <iostream>
using namespace std;

int main()
{
int FirstCathetusOfTriangle;
int SecondCathetusOfTriangle;
int HypotenuseOfTriangle;


    cout << "Enter one cathetus of triangle" << endl;
    cin >> FirstCathetusOfTriangle;
    cout << "Enter another cathetus of triangle" << endl;
    cin >> SecondCathetusOfTriangle;
    cout << "Enter hypotenuse of triangle" << endl;
    cin >> HypotenuseOfTriangle;

if(((FirstCathetusOfTriangle*FirstCathetusOfTriangle)+(SecondCathetusOfTriangle*SecondCathetusOfTriangle)==(HypotenuseOfTriangle*HypotenuseOfTriangle)))
{
    cout << "This is rectangular triangle :)";
}
else if (FirstCathetusOfTriangle+SecondCathetusOfTriangle<=HypotenuseOfTriangle||FirstCathetusOfTriangle+HypotenuseOfTriangle<=SecondCathetusOfTriangle||SecondCathetusOfTriangle+HypotenuseOfTriangle<=FirstCathetusOfTriangle)
{
    cout << "It's not even a triangle!!!!!";
}
else
{
    cout << "This is not a rectangular triangle ;(";

}
 return 0;
}