In a right triangle, the square of the length of one side is equal to the sum of the squares of the lengths of the other two sides. Write a program that prompts the user to enter the lengths of three sides of a triangle and then outputs a message indicating whether the triangle is a right triangle. Assume the user does not know the hypotenuse. You may NOT ask the user for the hypotenuse. Meaning, you have to check all 3 sides to verify that it is a right-angled triangle.

C+ + code is explained below

Explanation:

/Remove the following line

//if not using visual studio.

#include "stdafx. h"

//Import the required header files.

#include

using namespace std;

//Define the main function.

int main (void)

{

//Define the variables.

double side1, side2, side3;

//Prompt the user to enter the sides of the triangle.

cout << "Enter the side of the triangle:" << endl;

cout << "Enter first side of triangle:" << endl;

cin >> side1;

cout << "Enter second side of triangle:" << endl;

cin >> side2;

cout << "Enter third side of triangle:" << endl;

cin >> side3;

cout << endl;

//Check if the triangle sides are valid

if ((side1 + side2 > side3) &&

(side1 + side3 > side2) &&

(side2 + side3 > side1))

else

//Display not the valid side.

cout << "Not a valid side." << endl;

//Remove the following line if

//not using visual studio.

system ("pause");

return 0;

}