expected primary-expression before ‘int’

[Latik]

This is what i have example code in c++:

#include <iostream>

class Foo{
    public:
        void bar(){
            std::cout << "Hello" << std::endl;
        }
        
        int max(int num1,int num2) 
	{
	  // local variable declaration
	  int result;

	  if (num1 > num2)
		result = num1;
	  else
		result = num2;

	  return result; 
	}
};

extern "C" {
    Foo* Foo_new(){ return new Foo(); }
    void Foo_bar(Foo* foo){ foo->bar(); }
    int Foo_max(Foo* foo){ foo->max(int num1,int num2); }
}

after compiling it is giving error as :

foo.cpp: In function ‘int Foo_max(Foo*)’:
foo.cpp:26:37: error: expected primary-expression before ‘int’
foo.cpp:26:46: error: expected primary-expression before ‘int’

please suggest where I went wrong. Thnx..

[keskiverto]

What should this do:

int Foo_max( Foo* foo )
{
 foo->max( int num1, int num2 );
}

[Latik]

@keskiverto : I tried as you said but still giving same error.. please if any other solution..

[keskiverto]

That was not a solution. That was a question. Please, explain your code.

[Latik]

I got solution.. first I need to remove these

int

before the

num1

and

num2

. And I have to declare these two variables inside the

extern "C"

:

extern "C" {
    int num1;
    int num2;
    Foo* Foo_new(){ return new Foo(); }
    void Foo_bar(Foo* foo){ foo->bar(); }
    int Foo_max(Foo* foo){ foo->max(num1,num2); }
}

Thankx...

[ne555]

So in order to use the `Foo_max()' function you need to fill some global variables with the values that you want to use. Kind of bothersome.

[keskiverto]

Why did you make the num1 and num2 global variables?

What is Foo_max() supposed to do?