Printf the current address in C program

Question

Imagine I have the following simple C program:

int main() {

int a=5, b= 6, c;
c = a +b; 
return 0;
}

Now, I would like to know the address of

Answer 1

Visual C++ has the _ReturnAddress intrinsic, which can be used to get some info here.

For instance:

__declspec(noinline) void PrintCurrentAddress()
{
    printf("%p", __ReturnAddress);
}

Which will give you an address close to the expression you're looking at. In the event of some optimizations, like tail folding, this will not be reliable.