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

Depends on your definition of whole number. If you consider only 0 and above as whole number then it's as simple as: bool whole = foobar >= 0;.