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Functions — Revision Notes

CBSE · Class 11 · Computer Science

Functions revision notes for CBSE Class 11 Computer Science: 4 topics in quick points. Part of the CBSE Class 11 Computer Science syllabus.

42 questions80 flashcards6 formulas & key relations5 concepts

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Key Topics to Revise

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1. Core Ideas of Functions

  • Functions are used to achieve modularity and reusability.
  • The process of dividing a program into separate independent blocks of code or sub-problems with different names and specific functionalities is called modular programming.
  • A function definition begins with def.
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2. User Defined Functions, Arguments, and Parameters

  • User defined functions are created by the programmer for a specific task.
  • An argument is a value passed to the function during the function call.
  • A parameter is the name in the function header that receives the argument.
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3. Return Values and Multiple Values

  • A function may return value(s) using the return statement.
  • The return statement sends control back to the calling function.
  • Some functions only display output and do not return anything; such functions are void functions.
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4. Flow of Execution and Function Call Order

  • Flow of execution is the order in which statements in a program are executed.
  • The Python interpreter starts from the first statement and moves top to bottom.
  • Function definitions are not executed until the function is called.

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Full Notes

Key Concepts

A function is a named groupModular programming means dividing a computerA function definition begins with defAn argument is a value passedPython allows assigning a default value

Frequently Asked Questions

What are the important topics in Functions for CBSE Class 11 Computer Science?
Key topics in Functions include Core Ideas of Functions, User Defined Functions, Arguments, and Parameters, Return Values and Multiple Values, Flow of Execution and Function Call Order. Study these first, then practise questions on each for Class 11 exams.
How should I revise Functions for Class 11 exams?
Learn the core ideas first, then work through the 42 practice questions on Functions. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All CBSE Class 11 Computer Science Revision Notes

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