///////////////////////////// BEGIN PROGRAM [using Dev-C++ V.4 Compiler] //////////////////////////////
// Program to calculate the average of 3 integers.
// Programmer: Mike Ware
// FILE: sec2-1.cpp
// Last Updated: 9/5/02

#include <iostream.h>    // header file for input/output stream
#include <stdlib.h>    // header file for standard input/output

int main( )
{
    int number1, number2, number3;    // declaration of variables
    float average;

    cout << "Enter first integer: ";
    cin >> number1;
    cout << "Enter second integer: ";
    cin >> number2;
    cout << "Enter third integer: ";
    cin >> number3;

    average = float(number1 + number2 + number3) / 3;    // calculates the average

    cout << "\n\nThe average of the three integers is: " << average << endl << endl;

    system("PAUSE");
    return EXIT_SUCCESS;
}    // end main( )


///////////////////////////////////////////////////////////////////////////////////////////////////////

    int getAverage(int num1, int num2, int num3)
    {
        int average;
        average = (num1 + num2 + num3) / 3.0;
        return average;
    }    // end getAverage ( )

    OR WRITTEN AS:

    int getAverage(int num1, int num2, int num3)
    {
        return ((num1 + num2 + num3) / 3.0);
    }    // end getAverage ( )

    float convertFahrToCelsius( float fahrTemp )
    {
        float celsiusTemp;
        celsiusTemp = ( fahrTemp - 32 ) / 1.8;
        return celsiusTemp;
    }    // end convertFahrToCelsius ( )

    OR WRITTEN AS:

    float convertFahrToCelsius( float fahrTemp )
    {
        return ((fahrTemp - 32) / 1.8);
    }    // end convertFahrToCelsius ( )

//////////////////////////// CODE COMPILED USING DEV-C++/C V.4 COMPILER ////////////////////////////

// PURPOSE: Demonstrates the use of preprocessor definitions.
//          Calculates the cost of purchasing concert tickets based on
//          a constant ticket price. It prompts the user to enter his name
//          and desired amount of tickets and performs necessary
//          calculations. A report summary displaying the user's name
//          and balance is generated as output to screen.
//
//          FILE: sec2-2.cpp
//
//
// PROGRAMMER: Mike Ware
// DATE LAST UPDATED: 2-5-02

#include <stdlib.h>
#include <iostream.h>

#define MAXNAMELENGTH 25
#define TICKETCOST 32.50
#define SHOWINDEX 25
#define IGNORESTREAM 80

int main()
{
      char buyerName[MAXNAMELENGTH];
      int numOfTickets;
      float balance;

      cout << "Dave Matthews Band Concert #" << SHOWINDEX << endl << endl;
      cout << "Enter first name: ";
      cin.get(buyerName, MAXNAMELENGTH);
      cin.ignore(IGNORESTREAM, '\n');
      cout << "Enter desired number of tickets: ";
      cin >> numOfTickets;

      // calculate balance based on ticket price
      balance = numOfTickets * TICKETCOST;

      cout << setiosflags(ios::showpoint | ios::fixed);
      cout << setprecision(2);

      cout << endl << endl << "SUMMARY REPORT" << endl;
      cout << "-------------------------------------------------" << endl;
      cout << setw(5) << " "  << "NAME: " << buyerName << endl;
      cout << setw(5) << " "  << "BALANCE: $" << balance << endl;
      cout << "-------------------------------------------------" << endl;

      cout << endl << endl;
      system("PAUSE");
      return EXIT_SUCCESS;
}
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Example 1:


    int a = 6, b = 5, c = 9;
    cout << a + b * c;          --> 6 + ( 5 * 9 ) = 51
    cout << a * b % c;          --> ( 6 * 5 ) % 9 = 3



Example 2:


    int a = b = c = d = 6       --> initializes a, b, c, and d to a value of 6



Example 3:



    x = y = 5;
    a = 8;
    b = 5
    c = a * b / 3 + a / x;
    cout << c;                  --> ( 8 * 5 ) / 3 + ( 8 / 5 ) = 13 + 1 = 14



    c = 9 + a % b;
    cout << c;                  --> 12



    c = 10 / 3 * ( 2 + b )
    cout << c;                  --> 10 / 3 * ( 7 ) = 3 * 7 = 21;



Example 4:



    17 / 2 / 3 - 125 % 5        --> ( ( 17 / 2 ) / 3 ) - ( 125 % 5 ) = 2



    2.5 * 6 + 3 / 2.0           --> 15.0 + 1.5 = 16.5
    2.5 * ( 6 + 3 ) / 2.0       --> 22.5 / 2.0 = 11.25