Friend Function Access

#include <iostream>
#include <cstdint>
using namespace std;

class Register8
{
private:
    uint8_t value;

public:
    void setValue(uint8_t v) { value = v; }

    // your code here: declare a friend function printRegister(const Register8& r)
    friend void printRegister(const Register8 &r); 
};

// your code here: implement printRegister that prints "Register value = <value>"
void printRegister(const Register8 &r)
{
    cout << "Register value = " << static_cast<int>(r.value) << endl;
}

int main()
{
    Register8 r;
    r.setValue(170);
    printRegister(r);
    return 0;
}