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 = " << int (r.value);
}

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