#include <map>
#include <iostream>
#include <string>
using namespace std;
typedef map<string, int> STRING2INT;
void main(void)
{
STRING2INT DateMap;
STRING2INT::iterator DateIterator;
string DateBuffer;
// print the maximum number of <key,data> pairs that DateMap can hold
cout << "DateMap is capable of holding " << DateMap.max_size()
<< " <string,int> pairs" << endl;
if(!DateMap.empty())
cout << "DateMap has " << DateMap.size() << " entries" << endl;
else
cout << "DateMap is empty" << endl;
cout << "Entering new entries in DateMap" << endl;
// Fill in DateMap with the months of the year, mapped to their number
// January - 1, February - 2, etc. using operator[].
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;
if(!DateMap.empty())
cout << "DateMap has " << DateMap.size() << " entries" << endl;
else
cout << "DateMap is empty" << endl;
// Ask the user for a month of the year and print the number
// that corresponds to the month entered
DateIterator = DateMap.end();
while(DateIterator == DateMap.end())
{
cout << "Enter a Month :";
cin >> DateBuffer;
if((DateIterator = DateMap.find(DateBuffer)) != DateMap.end())
cout << (*DateIterator).first << " is Month Number "
<< (*DateIterator).second << endl;
else
cout << "Enter a Valid Month (example: March)" << endl;
}
// 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;
cout << "Entering new entries in DateMap" << endl;
// Fill DateMap with the days of the week, each mapped to an int
DateMap["Monday"] = 1;
DateMap["Tuesday"] = 2;
DateMap["Wednesday"] = 3;
DateMap["Thursday"] = 4;
DateMap["Friday"] = 5;
DateMap["Saturday"] = 6;
DateMap["Sunday"] = 7;
if(!DateMap.empty())
cout << "DateMap has " << DateMap.size() << " entries" << endl;
else
cout << "DateMap is empty" << endl;
// Ask the user for a day of the week and print the number
// that corresponds to the day entered
DateIterator = DateMap.end();
while(DateIterator == DateMap.end()){
cout << "Enter a Day of the Week:";
cin >> DateBuffer;
if((DateIterator = DateMap.find(DateBuffer)) != DateMap.end())
cout << (*DateIterator).first << " is Day Number "
<< (*DateIterator).second << endl;
else
cout <<"Enter a Valid Day of the Week(example: Monday)"<< endl;
}
// Now clear DateMap again - this time using erase instead of clear
DateMap.erase(DateMap.begin(), DateMap.end());
if(!DateMap.empty())
cout << "DateMap has " << DateMap.size() << " entries" << endl;
else
cout << "DateMap is empty" << endl;
}
