How do I detect floats?

Question

Is there any way of detecting floats in an if statement (or detecting floats in general? For example:
float x = 32
if (x == float) {cout << "true"}
else {cout << "false"}
Output: false
float x = 68.7
if (x == float) {cout << "true"}
else {cout << "false"}
Output: true

Answer 1

Many programming languages feature an operator such as "typeof", which returns the type of the variable given. For example, in javascript:
let x = 5;
console.log(typeof x); // "number"
It appears that you are using C++, which does not have a typeof operator but instead a built-in function called "typeid".
In your case, the if statement would then become:
if (typeid(x) == typeid(float))

Answer 2

Compare the value with its truncated or integer version:
string isFloat(float a) {
return (a==(int)a)? "False" : "True";
}