FOP CHAPTER1

DATE : 2 FEB 2011 ( WED )

PROGRAMMING AND PROBLEM SOLVING 

1) Algorithm - Is a sequence of instruction to solve a problem. It can be written in human language and programming language.

Example : Determines the area of rectangle .

FORMULA = WIDTH*HEIGHT

1. Get the width of the rectangle

2. Get the height of rectangle

3. Calculate the area using the formula

4. Annouce the answer

2) Pseudocodes - Is an outline of a program , written in a form that can easily be converted into real programming statements.

Example : Determines the area of rectangle .

FORMULA = WIDTH*HEIGHT

1. Read the width

2. Read the height

3. Set the area to the width multiplied by height

4. Print the area

3) Flowchart - Flowchart is a graphic representation of the logic or steps in a program .

Example of flowchart :  start > read width > set the area = width*height > print output > end

4) The software life cycle ( remark list down in exam )

    1. Analysis and specification of the task (problem definition)

    2. Design of the software (algorithm design)

    3. Implementation (coding)

    4. Testing

    5. Maintenance and evolution of the system

    6. Obsolescence

EXERCISE TIME !!!

Question 1 : print the area of circle area 

                  

                  FORMULA : CIRCLE AREA = 3.142*RADIUS*RADIUS

Agorithm : 1. Get the radius of circle

                 2. Calculate the area of circle with 3.142 multiply radius by radius

                 3. Display the area of circle

Pseudocode : 1. Read the radius

                        2. Set the area = 3.142*radius*radius

                        3. Print output

Flowchart : start > read radius > 3.142*radius*radius > print output > end

Question 2 : Find the celcius

                FORMULA : CELCIUS = (5/9)*(FAHREINHEIT-32)

Algorithm : 1. Get the fahreinheit of celcius

                  2. Calculate the celcius equal to five devide by nine multiple fahreinheit -32

                  3. Display celcius

Pseudocode :1. Read fahreinheit

                       2. Set the celcius = (5/9)*(fahreiheit-32)

                       3. Print output

Flowchart : start > read fahreinheit > calculate (5/9)*(fahreinheit-32) > print output > end

Question 3 : Find the fahreinheit

                  FORMULA : FAHREINHEIT  =( 9/5) *( CELCIUS + 32 ) 

Algorithm : 1. Get the celcius of fahreinheit
                  2. Calculate the fahreinheit equal nine divide by five multiply celcius 32
                  3. Display fahreinheit


Pseudocode : 1. Read celcius 
                        2. Set the fahreinheit =(9/5)*(celcius +32)
                        3. Print output


Flowchart : Start > read celcius > set the fahreinheit = (9/5)*(celcius +32) > print output > end

FINISH CHAPTER 1 !!!!!!!!!!!!!!!!!!   

feel so tired to finish it coz this is 1st time i'm create a blog like this !!