Sample Programs 
			Tuesday 7/9/02

Program #1
----------

// My first program :)
// Author : Me
// Date: 7/9/02
#include <iostream.h>
int main() {

  cout << "My Comp. Sci. teacher is my favorite teacher!!!" << endl;
  return 0;
}

Program #2
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// My second program :)
// Author : Me, what a surprise
// Date: 7/9/02

int main() {
 
  double inches, centimeters;
 
  cout << "Enter your height is inches : " << flush;
  cin >> inches;
  centimeters = 2.54*inches;
 
  cout << "You are " << centimeters << " cm tall." << endl;

}

Program #3
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// My third program :)
// Author : Me, I am on a roll!!!
// Date: 7/9/02 

int main() {

  char sex;
  int age;
  double weight;

// Read in necessary info here 
  cout << "Enter your sex(M/F) : " << flush;
  cin >> sex;
  cout << "How old are you? : " << flush;
  cin >> age;
  cout << "How much do you weigh? : " << flush;
  cin >> weight;

// Print out profile
  cout << "Here is your profile : " << endl;
  cout << "Sex : " << sex << endl;
  cout << "Age : " << age << endl;
  cout << "Weight : " << weight << endl;

}


Program #4
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// This test program illustrates the use of assignment statements and
// basic arithmetic operations.

int main() {
  
  int a=1, b, c=0;
  
  b = 17 + c;
  c = a + b*c;
  b = b % 7;
  a = (15 + a)/5;
  cout << a << " is a.\n";
  cout << b << " is b.\n";
  cout << c << " is c.\n";
}

Example #5
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// This program illustrates how to cast the type of a value.
#include <iostream.h>

int main() {

  int hits, atbats;
  double average;

  cout << "Enter number of hits for the year : " << flush;
  cin >> hits;
  cout << "Enter number of at bats for the year : " << flush;
  cin >> atbats;

  average = hits/atbats;
  cout << "You would think your average is " << average << endl;

  average = (double)hits/atbats;
  cout << "but it is really " << average << endl;
  return 0;
}

Output
------
Enter number of hits for the year : 200
Enter number of at bats for the year : 499
You would think your average is 0
but it is really 0.400802


Example #6
----------
// This program illustrates another work around to example 5.
#include <iostream.h>

int main() {

  int hits;
  double atbats, average;

  cout << "Enter number of hits for the year : " << flush;
  cin >> hits;
  cout << "Enter number of at bats for the year : " << flush;
  cin >> atbats;

  average = hits/atbats;
  cout << "Your average is " << average << endl;
  return 0;
}


Output
------
Enter number of hits for the year : 300
Enter number of at bats for the year : 650
Your average is 0.461538


Example #7
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// This example illustrates the use of constants in a program.
#include <iostream.h>

int main() {

  const double pi = 3.14159265358979;

  double radius;

  cout << "Enter the radius of your planet : " << flush;
  cin >> radius;

  cout << "The approximate surface area of your planet is " << 4*pi*radius*radius << endl;
  return 0;
}

Output
------
Enter the radius of your planet : 23.6
The approximate surface area of your planet is 6998.97