#include <iostream>
    using namespace std;
    int main ()
    {
        int i;
        cout << "Please enter an integer value: ";
        cin >> i + 4;
        return 0;
    }

    #include <iostream>
    #include <string>
    #include <sstream>
    using namespace std;
    int main ()
    {
        string mystr;
        float price = 0;
        int quantity = 0;
        cout << "Enter price: ";
        getline (cin, mystr);
        stringstream(mystr) >> price;
        cout << "Enter quantity: ";
        getline (cin, mystr);
        stringstream(mystr) >> quantity;
        cout << "Total price: " << price * quantity << endl;
        return 0;
    }

    #include <iostream>
    #include <ios>
    #include <istream>
    #include <limits>
    using namespace std;
    template <typename CharT>
    void ignore_line ( basic_istream<CharT>& in )
    {
        in.ignore ( numeric_limits<streamsize> :: max(), in.widen ( '\n' ) );
    }
    int main()
    {
        cout << "First input: ";
        cin.get();
        cout << "Clearing cin.\n";
        cin.clear();
        ignore_line ( cin );
        cout << "All done.\n";
    }

    #include <iostream>
    using namespace std;
    int main( )
    {
        char line[100];
        cin.getline( line, 100, 't' );
        cout << line;
        return 0;
    }