Structure in vector

This is a discussion on Structure in vector within the C++ Programming forums, part of the General Programming Boards category; Code: struct cart { int index; string pname; }; vector <cart> a; Is this possible to store a structure in ...

  1. #1
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    Structure in vector

    Code:
    struct cart
    {
    int index;
    string pname;
    };
    vector <cart> a;
    Is this possible to store a structure in vector? If so, how? And, how to manipulate with it? I mean, how to use push_back() to add an item and how to use at() to read a member from it.

  2. #2
    The superhaterodyne twomers's Avatar
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    Yes.

    Code:
    vector<cart> a;
    
    cart thing;// put values in there somewhere
    a.push_back( thing );
    etc. Haven't you tried that before?

  3. #3
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    It works the same as if you stored a string in a vector.

  4. #4
    Registered User hk_mp5kpdw's Avatar
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    You can use a constructor for the struct and use that to push objects onto the vector without using a named temp object as well.

    Code:
    struct cart
    {
        int index;
        string pname;
        cart(string name,int val) : pname(name), index(val) {}
    };
    
    vector <cart> a;
    
    a.push_back( cart("Bob",14) );
    a.push_back( cart("Linda",26) );
    
    ... etc ...
    
    // Output all structs in vector container.
    for( vector<cart>::const_iterator cit = a.begin(); cit != a.end(); ++cit )
        cout << "Name: " << cit->pname << "\tIndex: " << cit->index << endl;
    
    // Output a single item, the second object, position 1 in the vector.
    cout << "Name: " << a[1].pname << "\tIndex: " << a[1].index << endl;
    
    // Same as above, except uses "at"
    cout << "Name: " << a.at(1).pname << "\tIndex: " << a.at(1).index << endl;
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