SEBA Class 10 Computer Science Chapter 4 Important Questions | Introduction to Loops
📑 Quick Navigation
⭐ Very Short Answer Questions
Q1. What is a loop?
Answer: A loop is a programming construct used to execute a set of statements repeatedly.
Q2. Why are loops used in programming?
Answer: Loops reduce repetition and make programs shorter and more efficient.
Q3. Name the three types of loops in C.
Answer: While loop, Do-while loop and For loop.
Q4. Which loop checks the condition before execution?
Answer: While loop.
Q5. Which loop executes at least once?
Answer: Do-while loop.
Q6. What is an iteration?
Answer: One complete execution of a loop.
Q7. What is initialization?
Answer: Setting the starting value of a loop variable.
Q8. What is update expression?
Answer: It changes the loop variable after every iteration.
Q9. Which loop is best when the number of repetitions is known?
Answer: For loop.
Q10. What is an infinite loop?
Answer: A loop that never terminates.
📝 Short Answer Questions
Q11. Explain the importance of loops.
Loops allow repeated execution of statements without writing the same code multiple times.
Q12. Differentiate between while and do-while loop.
While loop checks condition first. Do-while executes once before checking condition.
Q13. What are the three parts of a for loop?
Initialization, Condition Checking and Update Expression.
Q14. What happens when the loop condition becomes false?
The loop terminates and control moves to the next statement.
Q15. Why is do-while loop useful?
It guarantees that the loop body executes at least once.
📚 Long Answer Questions
Q16. Explain the working of a while loop with example.
A while loop checks the condition before execution. The loop runs repeatedly until the condition becomes false.
Q17. Explain the working of a do-while loop.
A do-while loop executes at least once and then checks the condition for further execution.
Q18. Explain the structure of a for loop.
A for loop consists of initialization, condition checking and update expressions.
Q19. Compare while, do-while and for loops.
While checks first, do-while checks later and for loop combines all loop expressions in one line.
🎤 Viva Questions
1. What is looping?
2. What is iteration?
3. Name the three loops in C.
4. Which loop runs at least once?
5. What is initialization?
6. What is update expression?
7. What is loop condition?
8. What is an infinite loop?
9. Which loop is suitable when repetitions are known?
10. Why are loops important?
✍ Fill in the Blanks
1. A ______ is used for repeated execution of statements.
Answer: Loop
Answer: Loop
2. C provides ______ types of loops.
Answer: Three
Answer: Three
3. The ______ loop executes at least once.
Answer: do-while
Answer: do-while
4. The ______ loop checks condition first.
Answer: while
Answer: while
5. The ______ loop is suitable when number of repetitions is known.
Answer: for
Answer: for
✅ True / False
1. Loops reduce program length. Answer: True
2. Do-while loop may execute zero times. Answer: False
3. For loop contains initialization expression. Answer: True
4. While loop checks condition after execution. Answer: False
5. Looping is used for repetition. Answer: True
💻 Programming Questions
1. Write a C program to print your name 10 times using while loop.
2. Write a C program to print numbers from 1 to 20 using for loop.
3. Write a C program to find the sum of first N natural numbers.
4. Write a C program using do-while loop to accept numbers until user enters 0.
5. Write a C program to display the following pattern:
X
X X
X X X
X X X X
X
X X
X X X
X X X X
🎯 Most Important Exam Questions
1. Explain the importance of loops in programming.
2. Explain the structure and working of a while loop with example.
3. Explain the structure and working of a do-while loop with example.
4. Explain the structure of a for loop.
5. Differentiate between while loop and do-while loop.
6. Compare while, do-while and for loops.
7. Write a program to find the sum of first N natural numbers.
8. Write a program to find the sum of N numbers entered by the user.
9. Explain the flowchart for summation of numbers using loop.
10. Write a program to display patterns using loops.
11. Explain initialization, condition checking and update expression.
12. What is an infinite loop? Explain with example.
🏆 Last Minute Revision Questions
1. What is a loop?
A loop is used to execute a set of statements repeatedly until a specified condition becomes false.
2. Name the three types of loops in C.
While Loop, Do-While Loop and For Loop.
3. Which loop is called an Entry Controlled Loop?
While Loop and For Loop.
4. Which loop is called an Exit Controlled Loop?
Do-While Loop.
5. Which loop executes at least once?
Do-While Loop.
6. What are the three parts of a For Loop?
Initialization, Condition Checking and Update Expression.
7. What is an iteration?
One complete execution of a loop.
8. What is an infinite loop?
A loop that never terminates because its condition always remains true.
9. Which loop is preferred when the number of repetitions is known?
For Loop.
10. Write the syntax of a For Loop.
for(initialization; condition; update)
{
statements;
}
11. Write the syntax of a While Loop.
while(condition)
{
statements;
}
12. Write the syntax of a Do-While Loop.
do
{
statements;
}
while(condition);
🔥 Exam Focus Topics
- Concept of Looping
- Types of Loops
- While Loop Syntax & Working
- Do-While Loop Syntax & Working
- For Loop Syntax & Working
- Entry Controlled vs Exit Controlled Loop
- Infinite Loop
- Program to Print Numbers
- Program to Find Sum of Natural Numbers
- Pattern Printing using Loops
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