c23.cpp

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// c23.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <iostream.h>
#include <iomanip.h>

// ------------------------------------------------------------
const int NUMEMPLOYEES = 4;
const NUMHOURS = 10;
const STARTHOUR = 8;

// ------------------------------------------------------------
int schedule[ NUMHOURS ][ NUMEMPLOYEES ];

// ------------------------------------------------------------
void Enter();
void Display();
void Calculate();
int EnterEmpnum();
void EnterHour(int);

// ------------------------------------------------------------
int main(int argc, char* argv[])
{
	Enter();
	Display();
	Calculate();

	return 0;
}

// ------------------------------------------------------------
void Enter()
{
	int empnum;
	empnum = EnterEmpnum();
	while ( empnum != -1 )
	{
		EnterHour( empnum );
		empnum = EnterEmpnum();
	}
}

// ------------------------------------------------------------
int EnterEmpnum()
{
	int empnum;
	while(1)
	{
		cout << "Employee number?(0~3, -1 to quit):";
		cin >> empnum;

		if ( empnum < 0 ) 
			return -1;

		if ( empnum > NUMEMPLOYEES-1 ) 
			cout << "Employee number is out of range\n";
		else
			return empnum;
	}
}

// ------------------------------------------------------------
void EnterHour( int empnum )
{
	int hour;
	while(1)
	{
		cout << "Hour of appointment?(8~17, -1 to quit):";
		cin >> hour;
		if ( hour < 0 )
			break;
		if ( (STARTHOUR<=hour) && (hour<STARTHOUR+NUMHOURS) )
			schedule[hour-STARTHOUR][empnum] = 1;
		else
			cout << "Hour is of range\n";
	}
}

// ------------------------------------------------------------
void Display()
{
	cout << "\nSchedule:\n";
	cout << "      Joe    Sam    Paula   Mary\n";
	for ( int hour = 0; hour < NUMHOURS; hour++ )
	{
		cout << setw(2) << (hour+STARTHOUR) << ":00";
		for ( int empnum = 0; empnum < NUMEMPLOYEES; empnum++ )
		{
			cout << "\t";
			if ( schedule[hour][empnum] != 0 )
				cout << "X";
		}
		cout << endl;
	}
}

// ------------------------------------------------------------
void Calculate()
{
	cout << "\nPossible meeting time:\n";
	for ( int hour = 0; hour < NUMHOURS; hour++ )
	{
		int k = 0;
		for ( int empnum=0; empnum<NUMEMPLOYEES; empnum++ )
			k += schedule[hour][empnum];
		if ( k )
			cout << setw(2) << (hour+STARTHOUR) << ":00\t" << k << endl;
	}
}