Class Inheritance

This is a discussion on Class Inheritance within the C++ Programming forums, part of the General Programming Boards category; Attention: I figured it out. I forgot to change A to be c instead when I was messing around with ...

  1. #1
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    Post Class Inheritance

    Attention: I figured it out. I forgot to change A to be c instead when I was messing around with my classes.

    I'm trying to figure out how to link classes by inheritance but I keep getting an error:

    Code:
    Line 41 | error: expected unqualified-id before '-' token
    Here is my sample code:

    Edit: Forgot to include the methods for set, so I included those as well.

    Code:
    #include <iostream>
    
    #define CONTACTS 50
    
    using namespace std;
    
    class A {
        private:
            string name[CONTACTS];
        public:
            void set_name(string, int);
            string get_name(int x){return name[x];}
    };
    
    void A::set_name(string s, int x){name[x] = s;}
    
    class B: public A {
        private:
            string number[CONTACTS];
        public:
            void set_number(string, int);
            string get_number(int x){return number[x];}
    };
    
    void B::set_number(string s, int x){number[x] = s;}
    
    class C: public B {
        private:
            string email[CONTACTS];
        public:
            void set_email(string, int);
            string get_email(int x){return email[x];}
    };
    
    void C::set_email(string s, int x){email[x] = s;}
    
    int main(){
        C c;
        int index = 0;
    
        c.set_name("First Last", index);
        c.set_number("1-234-567-8901", index);
        c.set_email("first.last@gmail.com", index);
        cout << c.get_name(index) << endl;
        cout << c.get_number(index) << endl;
        cout << c.get_email(index) << endl;
    
        return 0;
    }
    Last edited by Khaltazar; 11-28-2012 at 06:28 PM.

  2. #2
    C++ Witch laserlight's Avatar
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    I don't see a '-' token in your code. There are '-' characters, but they are part of a string literal.
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  3. #3
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    Quote Originally Posted by laserlight View Post
    I don't see a '-' token in your code. There are '-' characters, but they are part of a string literal.
    That's why I was confused. I figured it out by changing

    Code:
    A.set_name("First Last"), index);
    to

    Code:
    c.set_name("First Last"), index);

  4. #4
    C++ Witch laserlight's Avatar
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    Well, I don't see A.set_name in your original code either. The error should have been "expected unqualified-id before '.' token" in that case.
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  5. #5
    Algorithm Dissector iMalc's Avatar
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    Your brackets don't line up in those statements.
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