Руководство по стандартной библиотеке шаблонов STL


Map1


#include <iostream.h> #include <stl.h>

int main () { typedef map<char, int, less<char> > maptype; maptype m; // Store mappings between roman numerals and decimals. m['l'] = 50; m['x'] = 20; // Deliberate mistake. m['v'] = 5; m['i'] = 1; cout << "m['x'] = " << m['x'] << endl; m['x'] = 10; // Correct mistake. cout << "m['x'] = " << m['x'] << endl; cout << "m['z'] = " << m['z'] << endl; // Note default value is added. cout << "m.count ('z') = " << m.count ('z') << endl; pair<maptype::iterator, bool> p; p = m.insert (pair<const char, int> ('c', 100)); if (p.second) cout << "First insertion successful" << endl; p = m.insert (pair<const char, int> ('c', 100)); if (p.second) cout << "Second insertion successful" << endl; else cout << "Existing pair " << (*(p.first)).first << " -> " << (*(p.first)).second << endl; return 0; }




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