cpp20.cpp

C++参考书

// Coded by plusir -- Jan.11.2003.
// Standard C++ Bible -- (P626-22-20)

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

int main()
{
	multimap<int, char> myMap1 ;
	multimap<int, char> myMap2 ;
	multimap<int, char>::iterator iter ;

	myMap1.insert( multimap<int, char>::value_type( 1, 'A' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 4, 'C' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 2, 'B' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 7, 'E' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 5, 'D' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 3, 'B' ) ) ;
	myMap1.insert( multimap<int, char>::value_type( 6, 'D' ) ) ;
    
	cout << "Contents of first multimap:" << endl ;
	for ( iter = myMap1.begin(); iter != myMap1.end(); ++iter )
		cout << iter->first << "-->" << iter->second << endl ;
	cout << endl ;

	myMap2.insert( multimap<int, char>::value_type( 1, 'C' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 4, 'F' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 2, 'D' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 7, 'E' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 5, 'F' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 3, 'E' ) ) ;
	myMap2.insert( multimap<int, char>::value_type( 6, 'G' ) ) ;
    
	cout << "Contents of second multimap:" << endl ;
	for ( iter = myMap2.begin(); iter != myMap2.end(); ++iter )
		cout << iter->first << "-->" << iter->second << endl ;
	cout << endl ;

	cout << "multimap1 " ;
	cout << ( myMap1 == myMap2 ? "==" : ( myMap1 < myMap2 ? "<" : ">" ) ) ;
	cout << " multimap2" << endl ;

	return 0 ;
}