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size.md

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size

Description : size() function returns the number of elements in a map

Example:

   // creates a map
     std::map<char, int> asciiMap;

     // adds four elements in the map
     asciiMap['A'] = 65;
     asciiMap['B'] = 66;
     asciiMap['C'] = 67;
     asciiMap['D'] = 68;

     // prints the size of the map
     std::cout << "Size of map (asciiMap.size()): " << asciiMap.size() << std::endl;

     // adds two elements in the map
     asciiMap['E'] = 69;
     asciiMap['F'] = 70;

     std::cout << "\nAfter adding two more elements" << std::endl;
     std::cout << "Size of map (asciiMap.size()): " << asciiMap.size() << std::endl;

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