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struct T
{
int x, y;
};
class A
{
public:
int a;
virtual void f( T t1, T& t2)
{
t2.x = t1.x;
t2.y = t1.y;
}
};
class B
{
public:
int b;
virtual void f(T t1, T& t2)
{
t2.x = t1.y;
t2.y = t1.x;
}
};
class C: public A , public B
{
public:
virtual void f(T t1, T& t2)
{
t2.x = t1.x+1;
t2.y = t1.y+1;
}
};
int main(int argc, char* argv[])
{
A a;
B b;
C c;
T t1, t2;
t1.x = 10;
t1.y = 20;
a.f(t1,t2);
assert(t2.x == t1.x && t2.y == t1.y);
t2.x = t2.y = 0;
b.f(t1,t2);
assert(t2.x == t1.y && t2.y == t1.x);
t2.x = t2.y = 0;
c.f(t1,t2);
assert(t2.x == t1.x+1 && t2.y == t1.y+1);
t2.x = t2.y = 0;
((A*)&c)->f(t1,t2);
assert(t2.x == t1.x+1 && t2.y == t1.y+1);
t2.x = t2.y = 0;
c.b = 1;
assert(((B*)&c)->b == 1);
((B*)&c)->f(t1,t2);
assert(t2.x == t1.x+1 && t2.y == t1.y+1);
t2.x = t2.y = 0;
return 0;
}
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