Can't pass a string argument into a constructor? [duplicate]

Question

When I try to run my program it prints out

"error: no matching function for call to Dog::Dog(const char [4], const char [5])".

This occurs at line 60 and 61. Is it reading the arguments as a C-String? I should still be able to pass it into the constructor, can't I?

#include <iostream> #include <string> using namespace std; #include <string> class Pet { protected: string type; string name; public: Pet(const string& arg1, const string& arg2); virtual void whoAmI() const; virtual string speak() const = 0; }; Pet::Pet(const string& arg1, const string& arg2): type(arg1), name(arg2) {} void Pet::whoAmI() const { cout << "I am an excellent " << type << " and you may refer to me as " << name << endl; } class Dog : public Pet { public: void whoAmI() const; // override the describe() function string speak(); }; string Dog::speak() { return "Arf!"; } class Cat : public Pet { string speak(); // Do not override the whoAmI() function }; string Cat::speak() { return "Meow!"; } ostream& operator<<(ostream& out, const Pet& p) { p.whoAmI(); out << "I say " << p.speak(); return out; } int main() { Dog spot("dog","Spot"); Cat socks("cat","Socks"); Pet* ptr = &spot; cout << *ptr << endl; ptr = &socks; cout << *ptr << endl; }

Any help is greatly appreciated!

Hint: does C++ [insert version here] "inherit constructors"? — user2864740
– user2864740, Commented Mar 22, 2018 at 3:16
There is more wrong with the code than the lack of constructors for Dog and Cat. Voted to reopen. — Jive Dadson
– Jive Dadson, Commented Mar 22, 2018 at 3:29

Jarod42 · Accepted Answer · 2018-03-22 09:14:11Z

0

Pet has constructor taking 2 string, not Dog.

You might use Base constructor thanks to using (since C++11):

class Dog : public Pet { public: using Pet::Pet; void whoAmI() const; // override the describe() function string speak(); };

Demo

edited Mar 22, 2018 at 9:14

answered Mar 22, 2018 at 3:18

Jarod42

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2 Comments

Adriano Martins Over a year ago

There is more stuff wrong than the "constructor inheritance".

Jarod42 Over a year ago

@AdrianoMartins: Indeed, there is also wrong override because of constness.

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