Can I initialize a private data member within the class constructor?

[RobotJones]

I have class 'ClassA' which has a constructor that takes an int, but no default constructor. Then, I have 'ClassB' which contains a private data member 'myArray[8]' of type 'ClassA'. If I initialize all 8 elements of 'myArray' within 'ClassB's constructor, is that good enough? Or must I initialize them in the private data member section? For example:

class ClassA {
public:
ClassA(int val) : myVal(val) {}
private:
int myVal;
};

class ClassB {
public:
ClassB() {
for(int i=0; i<8; i++)
myArray[i] = i; // will this satisfy ClassA's constructor?
}
private:
ClassA myArray[8]; // or must in initialize here?
};

Thanks in advance for your help and patience. I'm obviously still a beginner at this stuff.