Lab 2

For Lab 2

The Learning Outcome are:

1. Trace a program.
2. Designing solution to a problem using Problem Analysis Chart (PAC) and Input Process Output Chart (IPO).
3. To write, compile and run a simple computer program based on IPO.

So,For the first question,we need to trace a program line by line;
we need to trace the line number,variable and output.

Here is the example for one of the tracing program.

Trace 1 

1. public class ComputeArea {

2. public static void main(String[] args){

3. double radius;

4. double area;

5. radius = 20;

6.

7. area = radius * radius * 3.14159;

8.

9. System.out.println("Area of circle with radius " + radius + " is " + area);

10. }

11. }

LINE NUMBER	RADIUS	AREA	OUTPUT
5	20
7	20	1257
9	20	1257	Area of Circle with radius 20 is 1257

Then,we need to run program where we need to change value of money entered into ringgit and sen.
After a few times trying,i'm able to run the program,

The Source code:

when we run the program ;

it will display the money in ringgit and sen.

For the next question,we need to calculate BMI of a person when we enter the weight in pound and height in inches

The source code:

When we run the program,it will automatically calculate the BMI for a person.

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