56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
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// pairs.cpp -- defining and using a Pair template
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#include <iostream>
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#include <string>
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template <class T1, class T2>
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class Pair
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{
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private:
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T1 a;
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T2 b;
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public:
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T1 & first();
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T2 & second();
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T1 first() const { return a; }
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T2 second() const { return b; }
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Pair(const T1 & aval, const T2 & bval) : a(aval), b(bval) { }
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Pair() {}
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};
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template<class T1, class T2>
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T1 & Pair<T1,T2>::first()
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{
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return a;
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}
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template<class T1, class T2>
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T2 & Pair<T1,T2>::second()
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{
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return b;
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}
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int main()
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{
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using std::cout;
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using std::endl;
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using std::string;
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Pair<string, int> ratings[4] =
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{
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Pair<string, int>("The Purpled Duck", 5),
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Pair<string, int>("Jaquie's Frisco Al Fresco", 4),
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Pair<string, int>("Cafe Souffle", 5),
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Pair<string, int>("Bertie's Eats", 3)
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};
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int joints = sizeof(ratings) / sizeof (Pair<string, int>);
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cout << "Rating:\t Eatery\n";
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for (int i = 0; i < joints; i++)
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cout << ratings[i].second() << ":\t "
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<< ratings[i].first() << endl;
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cout << "Oops! Revised rating:\n";
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ratings[3].first() = "Bertie's Fab Eats";
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ratings[3].second() = 6;
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cout << ratings[3].second() << ":\t "
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<< ratings[3].first() << endl;
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// std::cin.get();
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return 0;
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}
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