#include <iostream>
#include <queue>
#include <string>
using namespace std;
class Message
{
public:
Message( string message = "A",string source = "B", int security_level = 0 );
bool operator<( const Message& rhs ) const;
string message() const;
int security_level() const;
string source() const;
private:
string message_, source_;
int security_level_;
};
inline
Message::Message( string message, string source, int security_level )
: message_( message ), source_( source ),
security_level_( security_level )
{}
bool Message::operator<( const Message& rhs ) const
{ return security_level() < rhs.security_level(); }
string Message::message() const
{ return message_; }
string Message::source() const
{ return source_; }
int Message::security_level() const
{ return security_level_; }
int main( )
{
const char* message[] = { "A","B", "C","D","E","F","G" };
const char* source[] = { "a", "b", "c","d", "e", "f", "G" };
const int security_level[] = { 0, 1, 3, 2, 6, 7, 8 };
const int num_messages = sizeof( security_level ) / sizeof( security_level[0] );
priority_queue<Message> messages;
for( int i = 0; i < num_messages; ++i ){
cout << "Event " << (i+1) << ": Security level - "
<< security_level[i] << "\n\t" << source[i] << " reports "
<< message[i] << endl;
messages.push( Message( message[i], source[i],security_level[i] ) );
}
while( !messages.empty() )
{
cout << "Security level - "
<< messages.top().security_level() << "\n\t"
<< messages.top().source() << " reports "
<< messages.top().message() << endl;
messages.pop();
}
}
|