A simple map: char and int



#include <iostream>
#include <map>
using namespace std;

int main()
{
  map<char, int> mapObject;
  int i;

  for(i = 0; i <26; i++) {
    mapObject.insert(pair<char, int>('A'+i, 65+i));
  }

  char ch;
  cout << "Enter key: ";
  cin >> ch;

  map<char, int>::iterator p;
  
  p = mapObject.find(ch);
  if(p != mapObject.end()) 
    cout << "Its ASCII value is  " << p->second;
  else
    cout << "Key not in map.\n";

  return 0;
}

1.	A map: insert pair, find, end
2.	A map of opposites.
3.	A map of word opposites, using strings.
4.	Cycle through a map using an iterator.
5.	Cycle through a map in reverse.
6.	Using [] in Map
7.	[] automatically inserts elements.
8.	Maps can store only unique keys.
9.	Use a map to create a phone directory: string class
10.	Use the greater function object in Map
11.	Demonstrating a multimap.
12.	Use a multimap to create the phone directory.
13.	Use a map of strings to create a phone directory.
14.	File and map

A simple map: char and int : Map « Data Structure « C++

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