#include <stdio.h>
class A {
public:
int x;
int y;
int foo (int arg);
};
int A::foo (int arg)
{
x += arg;
return arg *2;
}
int main()
A a;
a.x = 0;
a.x = 1;
a.y = 2;
printf ("a.x is %d\n", a.x);
return 0;