NEB Class 11 • Computer Science • C Programming • Practice Set
C Loops & Iteration Practice Set: NEB 11 Computer
Master C Loops and Iteration through clear concepts, representations, a reliable answer method and exam-focused practice.

Concepts · Worked reasoning · NEB practice
Quick answer: Loops repeat a controlled block. A for loop suits counted repetition, while and do-while suit condition-controlled work; initialization, condition and update together determine termination.
Worked practice
Build the result from meaning, not memory
Loops repeat a controlled block. A for loop suits counted repetition, while and do-while suit condition-controlled work; initialization, condition and update together determine termination.
Worked example
int sum=0; for(int i=1;i<=10;i++) sum+=i; produces 55 after ten iterations.
The governing relationship is Establish the loop variable before the test, prove progress toward a false condition, and trace boundary values. A do-while executes its body at least once. Check the convention, geometry or boundary condition before calculation.
Independent practice ladder
- Define the key physical quantities and give their SI units.
- Draw and label the relevant wave, ray, mode or energy diagram.
- Recalculate the worked example after changing one input by a factor of two.
- Explain the result without equations.
- Create a Nepal-relevant situation such as a classroom speaker, musical pipe, optical slit or thermal machine.
- Compare two cases and predict the larger output before calculating.
- Find and repair one deliberately wrong sign, node or unit.
- Write a three-mark answer and a five-mark answer.
Answer protocol: diagram → known data → principle → symbolic equation → SI substitution → result → physical check. Using a stray semicolon after the loop header, creating an infinite loop, choosing < instead of <=, or changing the control variable unpredictably.
NEB answer method
Model → evidence → equation → check
First identify the system and what the question asks. Label the diagram, apparatus or reaction with SI quantities, then state the principle before selecting an equation. Solve symbolically where possible and check units, limiting cases and chemical or physical meaning.
| Stage | Question | Evidence |
|---|---|---|
| Model | What is idealised? | Assumption stated |
| Representation | Which diagram fits? | Labels or balanced equation |
| Calculation | Which relation follows? | Symbols then SI values |
| Evaluation | Does it make sense? | Unit, sign and trend check |
Make the idea concrete in Nepal
Connect the model to a school laboratory, household technology, health, environment, energy or local material. The example should clarify the science rather than merely mention a place. Compare a prediction with an observation and record uncertainty.
Review the NEB Class 11 Computer Science revision roadmap and the complete Computer Science guide. For online or physical tuition, call 9846662070.
Questions students ask about C Loops and Iteration
What is the central idea of C Loops and Iteration?
Loops repeat a controlled block. A for loop suits counted repetition, while and do-while suit condition-controlled work; initialization, condition and update together determine termination.
Which equation should I remember?
Establish the loop variable before the test, prove progress toward a false condition, and trace boundary values. A do-while executes its body at least once.
How should I begin a numerical?
Draw the situation, list known quantities in SI units, choose the governing relation symbolically, substitute once and finish with a unit and reasonableness check.
What is a common exam mistake?
Using a stray semicolon after the loop header, creating an infinite loop, choosing < instead of <=, or changing the control variable unpredictably.
How can I practise this topic?
Alternate one concept explanation, one diagram and two numericals. Revisit errors after a day instead of only rereading the solution.
Where can I get tuition support?
For online or physical KTM Tuition classes, call 9846662070. After Grade 12, the MKS Education panel below gives preparation and pre-counselling contacts.
Frequently asked questions
References and next steps
Scope checked against CDC Nepal; concept support from an institutional reference and OpenStax Science. Continue with the C Loops and Iteration cluster.
NEB +2 tuition support
Ask about online or physical tuition
For focused Class 11 and Class 12 subject tuition, lesson clarification, worked-example practice and exam preparation, call 9846662070. Class mode, timetable, teacher availability and fees should be confirmed directly before enrolment.
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