Compile error: Undefined symbols: “_main”, referenced from: start in crt1.10.5.o

Question

I have the following code:

#include 

using namespace std;

class testing{
   int test() const;
   int test1(const testing& test2);
};

int t         


        

Answer 1

If you declare the main function in another file, then you must compile the two files separately, and then link them into 1 executable.

Unless you include the entire contents of the file from the file with the main function, that will work too, though a bit odd. But, if you do this then you have to make sure that you compile the file which has the main() function.