Is there a way to check if a variable is a whole number? C++

Question

I need to check if a variable is a whole number, say I have the code:

double foobar = 3;
//Pseudocode
if (foobar == whole)
    cout << \"It\'s whole\";         


        

Answer 1

A concise version of Pepe's answer

bool isWhole(double num)
{
   return num == static_cast(num);
}