To check for right angled triangle

checkrighttriangle.c

#include <stdio.h>
#include <cs50.h>

int main(void)
{
  //declare function to check validity of right angled triangle
  bool valid_righttriangle(float x, float y, float z)
  {
   //to check using Pythagoras' Theorem
  if (x*x + y*y = z*z) || (x*x + z*z = y*y) || (y*y + z*z = x*x)
    {
    return true
    }
  return false
}