Thread: Minimum Macro

I am trying setup a simple macro that compares 2 numbers and selects the lowest number.

I found the following example from someelse on the C++ board.

#define MINIMUM1 (a, b) (((a) < (b)) ? (a) : (b))

I am confused how I execute the macro from main. I have tried

Code:

 
   double lowestNumber;
  
   lowestNumber = MINIMUM1(10, 5);
   cout << "Lowest number = " << lowestNumber;

but that didn't even compile. I received the this error, "term does not evaluate to a function."

Any help would be appreciated.

Thanks,

Code:

#define MINIMUM1(a, b) (((a) < (b)) ? (a) : (b))
               ^^^^ no space here

Thanks - I took the extra space out but am still getting the same compiler error.

Any suggestions?

The macro must appear in the same file, either directly or in an #include, before any use. "does not evaluate to a function" most likely means that the compiler sees symbol(whatever) before symbol is introduced. All the cool kids use std::min anyway. What happens with MINIMUM1(*p1++,*p2++);?