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  4. C++ Class Templates
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C++ Class Templates

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242 Discussions

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  • ale_grassi89
     + 0 comments

    My solution for C++14 as it gives time exceed due to stupidly using endl everytime (don't know why it does not happen to C++11) 

    struct FastIO {
    FastIO() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
};

static FastIO fastio;


template<typename T>
class AddElements {
    T value;
public:
    AddElements(T val) : value(val) {}
    T add(T val) const {
        return value + val;
    }
};

template<>
class AddElements<string> {
    string value;
public:
    AddElements(string val) : value(val) {}
    string concatenate(const string& val) const {
        return value+val;
    }
};

  • finndemoncat
     + 0 comments
    template<typename X>
class AddElements
{
    X element;
public:
    AddElements(X arg) : element(arg) {}
    
    X add(X arg) { element += arg; return element; }
};

template<>
class AddElements<string>
{
    string element;

public:
    AddElements(string arg) : element(arg) {}
    
    string concatenate(string arg) { element = element + arg; return element; }
};

  • PiiaYliharsil
     + 0 comments

    you are required to use class templates to create a class that can work with different data types. The task demonstrates how templates help achieve generic programming in C++. Khelo24bet Register

  • tim900217
     + 0 comments

    Answer

    template<class T>
class AddElements {
public :
    AddElements(T element1) {
        m_element1 = element1;
    }
    T add(T element2) {
        m_element2 = m_element1 + element2;
        return m_element2;
    }
    T concatenate(T element2) {
        m_element2 = m_element1 + element2;
        return m_element2;
    }
    T m_element1;
    T m_element2;
};

  • parveshgoyat7
     + 0 comments

    include

    include

    using namespace std; template class AddElements { T element; public: AddElements(T arg) : element(arg) {} T add(T arg) { return element + arg; } }; template <> class AddElements { string element; public: AddElements(const string &arg) : element(arg) {} string concatenate(const string &arg) { return element + arg; } };

    int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n;

    string type;
for (int i = 0; i < n; ++i) {
    cin >> type;

    if (type == "int") {
        int a, b;
        cin >> a >> b;
        AddElements<int> myint(a);
        cout << myint.add(b) << '\n';
    } 
    else if (type == "float") {
        double a, b;
        cin >> a >> b;
        AddElements<double> myfloat(a);
        cout << myfloat.add(b) << '\n';
    } 
    else if (type == "string") {
        string a, b;
        cin >> a >> b;
        AddElements<string> mystring(a);
        cout << mystring.concatenate(b) << '\n';
    }
}

return 0;

    }