map.cpp

来自「Vc.Net入门与提高源码」· C++ 代码 · 共 42 行

// compile with: /EHsc
#pragma warning(disable:4786)
#include <iostream>
#include <string>
#include <map>
using namespace std;
typedef map<int, string, less<int> > INT2STRING;
int main()
{
   // 创建一个从整型到字符串类型的map
   INT2STRING theMap;
   INT2STRING::iterator theIterator;
   string theString = "";
   int index;
   theMap.insert(INT2STRING::value_type(0,"Zero"));
   theMap.insert(INT2STRING::value_type(1,"One"));
   theMap.insert(INT2STRING::value_type(2,"Two"));
   theMap.insert(INT2STRING::value_type(3,"Three"));
   theMap.insert(INT2STRING::value_type(4,"Four"));
   theMap.insert(INT2STRING::value_type(5,"Five"));
   theMap.insert(INT2STRING::value_type(6,"Six"));
   theMap.insert(INT2STRING::value_type(7,"Seven"));
   theMap.insert(INT2STRING::value_type(8,"Eight"));
   theMap.insert(INT2STRING::value_type(9,"Nine"));
   for( ; ; )
   {
      cout << "Enter \"q\" to quit, or enter a Number: ";
      cin >> theString;
      if (theString == "q")
         break;
      for (index = 0; index < (signed)theString.length(); index++)
      {
         theIterator = theMap.find(theString[index] - '0');
         if (theIterator != theMap.end() )   // is 0 - 9
            cout << (*theIterator).second << " ";
         else    // some character other than 0 - 9
            cout << "[err] ";
      }      
      cout << endl;
   }
}