how to check wheteher a umber is a prfect square code example

Example: how to check sqrt of number is integer c++

bool isPerfectSquare(long double x) 
{   
  // Find floating point value of  
  // square root of x. 
  long double sr = sqrt(x); 
  
  // If square root is an integer 
  return ((sr - floor(sr)) == 0); 
}