Question

I cannot for the life of me work out why this isn’t working… Can’t compile, keep getting an error “no matching function for call to ‘Duty::Duty()'” for the line with the changeDuty constructor. I think it thinks I’m trying to call one of the Duty class constructors? But I just want to pass in a Duty class object!

class Duty
  {
  string Chore;
  string Member;

  public:
  Duty(string dutyInfo);
  Duty(string chore, string member) {Chore = chore; Member = member;}
  };

class changeDuty
  {
  Duty Original;

  public:
  changeDuty(Duty original) {Original = original;}
  };

After perusing similar questions, I’ve tried using

changeDuty(Duty& original) {Original = original;}

and

changeDuty(const Duty& original) {Original = original;}

Still no dice. What am I doing wrong?

Answer 1

changeDuty(Duty original) {Original = original;}

This first default-constructs Original, then reassigns it. But there is no default constructor, so it is an error. What you wanted was:

changeDuty(Duty original) : Original(original) {}

which copy-constructs Original.