clear the content of a map with clear() function : map erase « map multimap « C++ Tutorial

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C++ Tutorial » map multimap » map erase 
23.4.3.clear the content of a map with clear() function
#include <map>
#include <iostream>
#include <string>

using namespace std;

typedef map<string, int> STRING2INT;

int main(void)
{
    STRING2INT DateMap;
    STRING2INT::iterator DateIterator;
    string DateBuffer;

    DateMap["January"1;
    DateMap["February"2;
    DateMap["March"3;
    DateMap["April"4;
    DateMap["May"5;
    DateMap["June"6;
    DateMap["July"7;
    DateMap["August"8;
    DateMap["September"9;
    DateMap["October"10;
    DateMap["November"11;
    DateMap["December"12;

    // empty DateMap - note that clear simply calls erase(begin(),end());
    DateMap.clear();

    if(!DateMap.empty())
        cout << "DateMap has " << DateMap.size() << " entries" << endl;
    else
        cout << "DateMap is empty" << endl;

}
23.4.map erase
23.4.1.Remove an entry from a map
23.4.2.clear the content of a map with erase(Map.begin(), Map.end());
23.4.3.clear the content of a map with clear() function
23.4.4.Erase a found pair from map
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