Example

class MyClass {
public:
MyClass (char *nameInput, int twoInput, int threeInput);
private:
char *one;
int two, three;
int four;
};

MyClass::MyClass (char *nameInput, int twoInput, int threeInput) : two(twoInput), one(nameInput), three(threeInput), four(twoInput + threeInput)
{
}

Solution

Initialize class members in the same order that they are declared.

class MyClass {
public:
MyClass (char *nameInput, int twoInput, int threeInput);
private:
char *one;
int two, three;
int four;
};

MyClass::MyClass (char *nameInput, int twoInput, int threeInput) : one(nameInput), two(twoInput), three(threeInput), four(twoInput + threeInput)
{
}