Use a map of strings to create a phone directory.


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

int main()
{
  map<string, string> directory;

  directory.insert(pair<string, string>("T", "4444"));
  directory.insert(pair<string, string>("C", "9999"));
  directory.insert(pair<string, string>("J", "8888"));
  directory.insert(pair<string, string>("R", "0000"));

  string s;
  cout << "Enter name: ";
  cin >> s;

  map<string, string>::iterator p;
  
  p = directory.find(s);
  if(p != directory.end()) 
    cout << "Phone number: " << p->second;
  else
    cout << "Name not in directory.\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.	A simple map: char and int
14.	File and map

Use a map of strings to create a phone directory. : Map « Data Structure « C++

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