1. INTRODUCTION

Programming is the process of designing, writing, testing, debugging, and maintaining

the source code of computer programs. This code can be written in a variety of computer

languages. Some of this languages include Java, C, and Python. But in this task we will use

C++ (pronounced cee plus plus) language. C++ is a general purpose programming language.

It is designed with bias for system programming, with performance, efficiency and flexibility

of use as its design requirements. Other than that, C++ has also been found useful in many

other contexts. It has a large community including desktop applications, servers, and

entertainment software such as videogames. It has a relatively clear and mature standard. We

as human use programming languages, instead of writing directly in ones and zeros, so we

can easily write and understand the computer code and organize it. We can think of the

different kind of our code as being individual instructions that we give to the computer. Then

the computer will follows these instructions explicitly to execute our written code.

2. DOCUMENTATION

2.1 PROGRAM 1 (HELLO WORLD!!)

2.1.a INPUT PROCESSING OUTPUT

INPUT PROCESSING OUTPUTprintf(“Hello World !!:\n”); “Hello World!!”

2.1.b PSEUDO CODE

1. Start

2. Display “Hello World!!”

3. End

2.1.c FLOWCHART

START

DISPLAY “HELLO WORLD!!”

END

2.1.d SOURCE CODE

Source Code

2.1.e OUTPUT

Output

2.2 PROGRAM 2 (SUM OF 2 NUMBERS)

2.2.a INPUT PROCESSING OUTPUT

INPUT PROCESSING OUTPUTInteger 1Integer 2

Sum = integer 1 + integer 2 Sum of 2 numbers

2.2.b PSEUDO CODE

1. Start

2. Insert first integer

3. Insert second integer

4. Sum of first and second integer is calculated

5. Display the sum of first and second integer

6. End

2.2.c FLOWCHART

START

Display the sum of first and second integer

END

Insert second integer

Insert first integer

Calculate the sum of first and second integer

2.2.d SOURCE CODE

Source Code

2.2.e OUTPUT

Output

2.3 PROGRAM 3 (DETRMINE AREA OF CIRCLE)

2.3.a INPUT PROCESSING OUTPUT

INPUT PROCESSING OUTPUTRadius of circle Area = pi*r1 Area of a circle

2.3.b PSEUDO CODE

1. Start

2. Enter circle radius

3. Calculate the area of circle from the value of radius

4. Area of a circle is calculated and displayed

5. End

2.3.c FLOWCHART

START

Area of a circle is calculated and displayed

END

Enter circle radius

Calculate the area of circle from the value of radius

2.3.d SOURCE CODE

Source Code

2.3.e OUTPUT

Output

2.4 PROGRAM 4 (CALCULATE TOTAL RESISTANCE SERIES/ PARALLEL)

2.4.a INPUT PROCESSING OUTPUT

INPUT PROCESSING OUTPUTResistance 1Resistance 2

rtotalseries = r1 + r2rtotalparallel = ((r1*r2)/(r1+r2))

Total resistance seriesTotal resistance parallel

2.4.b PSEUDO CODE

1. Start

2. Enter value of the first resistor

3. Enter value of the second resistor

4. Calculate total resistance of series and parallel

5. Value total resistance of series and parallel is displayed

6. End

2.4.c FLOWCHART

START

Value total resistance of series and parallel is displayed

END

Enter value of the first resistor

Enter value of the second resistor

Calculate total resistance of series and parallel

2.4.d SOURCE CODE

Source Code

2.4.e OUTPUT

Output

3. TASK 1 (PROGRAM TO CALCULATE BODY MASS INDEX (BMI)

3.a INPUT PROCESSING OUTPUT

INPUT PROCESSING OUTPUTBody weightBody height

BMI = weight (kg) / height² (m) Body mass index

3.b PSEUDO CODE

1. Start

2. Enter body weight in kilogram

3. Enter body height in meter

4. Calculate the value of BMI using equation BMI = weight (kg) / height² (m)

5. Value of BMI is displayed

6. End

3.c FLOWCHART

START

Enter body weight in kilogram

Enter body height in meter resistor

A1

3.d SOURCE CODE

Source Code

3.e OUTPUT

Output

Value of BMI is displayed

END

Calculate the value of BMI using equation BMI = weight(kg) / height² (m)

A1

4. DISCUSSION

a) There are three type of error that can occur when writing a program which is Syntax

Error, Run-Time Error, and Logical error.

b) Syntax Error occurs when unrecognizable or improper format of information is

entered.

c) Run-Time Error occurs when the program attempts an invalid operation such as

division by zero and it can cause the program to terminate.

d) Logical error happens when coding the program failed to solve the problems. This

error is hard to detect because you will not get any error messages and the only way

to the existence of logics errors is the production of wrong solution.

e) Text that surrounded with /* and */ is ignored by computer and it is useful to describe

the program.

f) Any variables that want to be used must declared first to avoid error.

g) Student easily get confuse the programming language with their daily life dictionary

which can makes an error in the program such as “printf” which that usually type as

“print”, “floatf” with “float”, and “stdio.h” with studio.h”.

h) All statements must end with a semicolon “(“ , ”)”

i) Integers division takes place only when both elements are integers

5. CONLCUSIONS

a) Even the slightest mistake or only one letter you accidently ignored it will cause an

error to your program. Thus, make sure you have double checked your source code to

make sure it will run smoothly.

b) Two-ways communication between the program and its user is essential to make the

program working effectively. So, make sure the sentence and language that you use

as guide line in the program is easy to understand by its user.