//文件名:CHAPTER7-25.cpp
#include <deque>
#include <iostream>
int main( ) 
{
   using namespace std; 
   deque <int> c1, c2;
   c1.push_back( 1 );
   c1.push_back( 2 );
   c1.push_back( 4 );
   c2.push_back( 1 );
   c2.push_back( 3 );
   if ( c1 <= c2 ) cout << "Deque c1 is less than or equal to deque c2." << endl;
   else cout << "Deque c1 is greater than deque c2." << endl;
return 0;
}