Could I retrieve the datatype from a variable in C?

Question

Has a way to get the datatype in C?

For example:

int foo;

if (foo is int)
{
    // do something
}

or something like:

if (typeof(foo         


        

Answer 1

The fact that foo is an int is bound to the name foo. It can never change. So how would such a test be meaningful? The only case it could be useful at all is in macros, where foo could expand to different-type variables or expressions. In that case, you could look at some of my past questions related to the topic:

Type-generic programming with macros: tricks to determine type?

Determining presence of prototype with correct return type