3. Very Short Question.
a) An algorithm is programming language
or programming tool?
Ans: An algorithm is not a programming
language or a programming tool. It is a step-by-step procedure to solve a
problem.
b) Does flowchart help to find and
correct the mistakes in the program?
Ans: Yes, a flowchart helps to find and
correct mistakes because it shows the logical flow of the program clearly.
c) How can you begin and terminate an
algorithm?
Ans: An algorithm begins with Start and
terminates with Stop/End.
d) Which symbol is used to join flowchart
of different pages?
Ans: The Connector symbol (off-page
connector) is used to join flowcharts of different pages.
e) Can you write simple program without
writing an algorithm and flowchart?
Ans: Yes, we can write a simple program
without writing an algorithm or flowchart, but it may increase the chances of
errors.
4. Short Question.
a. What is a computer program?
Ans: A computer program is a set of
instructions written in a programming language that tells a computer how to
perform a specific task.
b. Why is preplanning needed to write
program instructions?
Ans: Preplanning helps organize ideas,
reduce errors, save time, and ensure the program solves the problem correctly
before actual coding begins.
c. What are the commonly used
programming tools?
Ans: Commonly used programming tools are
Algorithm, Flowchart, Pseudocode.
d. What is an algorithm? Write its importance
in the programming.
Ans: An algorithm is a step-by-step procedure to
solve a problem.
Importance:
- ·
Provides clear
solution steps
- ·
Makes coding
easier
- ·
Reduces errors
- ·
Saves development
time
e. What is a flowchart? What is its use
in the programming?
Ans: A flowchart is a graphical
representation of an algorithm using symbols.
Use:
- ·
Shows program
logic clearly
- ·
Helps detect
errors
- ·
Improves
understanding of the program
f. Draw different flowchart symbols used
in the flowchart and also write their meaning.
Ans: Different flowchart symbols and
their meanings:
- ·
Oval (Terminator)
– Represents Start/End
- ·
Rectangle
(Process) – Represents Calculation/Instruction
- ·
Parallelogram
(Input/Output) – Represents Input or Output operation
- ·
Diamond
(Decision) – Represents Condition/Decision making
- ·
Arrow (Flow line)
– Shows the direction of flow
- ·
Circle
(Connector) – Connects different parts of the flowchart**
7. Write Algorithm
of:
a. to prepare a cup of
tea.
1. Start
2. Boil water in a kettle.
3. Add tea leaves/tea bag into a cup.
4. Pour boiled water into the cup.
5. Add sugar and milk as required.
6. Stir well.
7. Serve tea.
8. Stop
b. to print larger of
two numbers.
1.
Start
2.
Input number1 and number2
3.
If number1 > number2, print number1
4.
Else print number2
5.
Stop
c. to check if the
student has passed or failed assuming pass mark 40.
1.
Start
2.
Input marks
3.
If marks ≥ 40, print "Pass"
4.
Else print "Fail"
5.
Stop
d. to calculate the
area of a rectangular box.
- 1. Start
- 2. Input length and breadth
- 3. Area = length × breadth
- 4. Print Area
- 5. Stop
e. to calculate the
area of a square.
1. Start
2. Input side
3. Area = side × side
4. Print Area
5. Stop
f. to input two
numbers and calculate their sum.
1. Start
2. Input number1 and number2
3. Sum = number1 + number2
4. Print Sum
5. Stop
g. to check whether
the entered number is odd or even.
1.
Start
2.
Input number
3.
If number mod 2 = 0, print "Even"
4.
Else print "Odd"
5.
Stop
h. to input and
display the name, address and telephone number of any two students.
1.
Start
2.
Input name1, address1, telephone1
3.
Input name2, address2, telephone2
4.
Display name1, address1, telephone1
5.
Display name2, address2, telephone2
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