44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
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// multmap.cpp -- use a multimap
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#include <iostream>
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#include <string>
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#include <map>
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#include <algorithm>
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typedef int KeyType;
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typedef std::pair<const KeyType, std::string> Pair;
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typedef std::multimap<KeyType, std::string> MapCode;
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int main()
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{
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using namespace std;
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MapCode codes;
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codes.insert(Pair(415, "San Francisco"));
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codes.insert(Pair(510, "Oakland"));
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codes.insert(Pair(718, "Brooklyn"));
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codes.insert(Pair(718, "Staten Island"));
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codes.insert(Pair(415, "San Rafael"));
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codes.insert(Pair(510, "Berkeley"));
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cout << "Number of cities with area code 415: "
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<< codes.count(415) << endl;
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cout << "Number of cities with area code 718: "
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<< codes.count(718) << endl;
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cout << "Number of cities with area code 510: "
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<< codes.count(510) << endl;
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cout << "Area Code City\n";
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MapCode::iterator it;
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for (it = codes.begin(); it != codes.end(); ++it)
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cout << " " << (*it).first << " "
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<< (*it).second << endl;
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pair<MapCode::iterator, MapCode::iterator>
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auto range
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= codes.equal_range(718);
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cout << "Cities with area code 718:\n";
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for (it = range.first; it != range.second; ++it)
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cout << (*it).second << endl;
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// cin.get();
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return 0;
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}
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