Computer Science I
Chapter 1: Getting Started

Lab 2 Work: Due Friday September 12th 2008

You Submitting your answers.

Answers should be included in a Word document in the appropritate sections.

• Type your name and lab number in heading 1.
• Create two heading-2 called P1 and P2 for your program code.
• Program Code should be pasted in Courier New Font 10.
• Non-program answers should be written in Times Roman Font 12.

Lab Objectives

To gain experience with

• the activity of programming
• recognizing syntax and logic errors

P1. Writing simple programs

Your initial C++ programs will be contained entirely in one file and there are some elements that they all will have because of requirements of the C++ language. Essentially, these are 1) markers for the compiler - to know where your program begins and ends - and 2) files that your program also needs in order to operate. When you build a program, your compiler looks for code of the form:

#include <iostream>
using namespace std;
int main()
{

   /*
      your work goes here
   */
   
   return 0;
}   

The textbook has a program that prints the message Hello, World! on the screen.

Try changing it to display Hello, Universe!

Type the program into your compiler's editor, compile and test. Then paste the source code in your word document with heading P1.

/* paste program in your word document with heading P1*/

P2. Detecting syntax and logic errors

There are numerous opportunities for error in any program, many times in places that seem too simple to require close attention. What do you think the following program is supposed to do?

Type your answer in your lab document under heading P2

#include iostream.h

int main()
{  double radius = 11;  /* centimeters
   double pi  = 3.14
   double sphere_volume = (4/3)*pi*(radius * radius ** radius);
   double surface_area = 5 * pi * radius;
   cout << "Volume = " < sphere_volume;
   cout << "Area = " << surface_area;
   return 0;
}   

Will it work as it is?

Type your answer in your lab document under heading P2

Try compiling the program. What were the results? (Use copy and paste to place a copy of your compiler's error messages here.) Type your answer in your lab document under heading P2

Fix the syntax errors. Place a copy of your program's output here.

Type your answer in your lab document under heading P2

The program has two logic errors. Fix them both and paste the corrected program in your word document under heading P2.

/* paste program in your word document under heading P2*/