How to initialize inner class that has a c-tor with parameters

Question

Hi to all,

I'm trying to write a simple code and it won't compile!

Any ideas?

#include <stdio.h>

class RegClass {

public:

RegClass(int param) { printf("c-tor (%d)\r\n",  param); }

};

class Test {

public:

int a;

RegClass Reg(5);

};

int main() {

Test t;

t.a = 5;

return 0;

}

Answer 1

Try to use “{ }”: RegClass Reg{ 5 };

Or consider the classic approach:

class Test
{
public:
    int a;
    RegClass Reg;

    Test( ) : a( 0 ), Reg( 5 )
    {

    }
};