pr22014.cpp

来自「c++编程宝典源码及Quincy99编译器 是《标准C++编程宝典》电子工业出」· C++ 代码 · 共 46 行

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// File Name: pr22014.cpp
////////////////////////////////////////
#include <iostream>
#include <map>

typedef std::map<int, char> MYMAP;

int main()
{
    // Create the map object.
    MYMAP charMap;

    // Populate the map with values.
    charMap[1] = 'A';
    charMap[4] = 'D';
    charMap[2] = 'B';
    charMap[5] = 'E';
    charMap[3] = 'C';

    // Display the contents of the map.
    std::cout << "Contents of map: " << std::endl;
    MYMAP::iterator iter;
    for (iter = charMap.begin();
            iter != charMap.end(); iter++)
    {
        std::cout << (*iter).first << " --> ";
        std::cout << (*iter).second << std::endl;
    }

    // Erase the map's second element.
    iter = charMap.begin();
    charMap.erase(++iter);

    // Display the new contents of the map.
    std::cout << "Contents of new map: " << std::endl;
    for (iter = charMap.begin();
            iter != charMap.end(); iter++)
    {
        std::cout << (*iter).first << " --> ";
        std::cout << (*iter).second << std::endl;
    }

    return 0;
}