Class 11 Computer Science — Chapter 7: FUNCTIONS

What you'll learn

• ▸Modularity and the Need for Functions
• ▸Defining a User-Defined Function
• ▸Calling a Function
• ▸Arguments and Parameters
• ▸The `return` Statement
• ▸Advantages of Using Functions
• ▸Passing Arguments and Object Identity
• ▸Python Standard Library

Chapter Summary

--- PAGE 1 --- CHAPTER 7 FUNCTIONS 7.1 INTRODUCTION Till now we have written some programs and might have realised that as the problem gets complex, the number of lines in a program increase, which makes the program look bulky and difficult to manage. Consider the following problem statement: There is a company that manufactures tents as per user's requirements. The shape of the tent is cylindrical surmounted by a conical top. “Once you succeed in writing the programs for [these] complicated algorithms, they usually run extremely fast. The computer doesn’t need to understand the algorithm, its task is only to run the programs.” – R. Tarjan Figure 7.1: Shape of a tent The company performs the following tasks to fix the selling price of each tent. 1. Accept user requirements for the tent, such as a) height b) radius c) slant height of the conical part 2. Calculate the area of the canvas used 3. Calculate the cost of the canvas used for making the tent 4. Calculate the n…

Practice Questions from this Chapter

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1. Compare functions to building blocks. Get Solution →
2. Show Python's 'hello world' function. Get Solution →
3. Explain modular programming's real-world use. Get Solution →
4. What keyword is used to begin a function definition in Python? Get Solution →
5. What punctuation mark must a function header always end with? Get Solution →
6. What is defined as a named group of instructions that accomplish a specific task when invoked? Get Solution →
7. The process of dividing a computer program into separate independent blocks of code is known as what? Get Solution →
8. What is a value passed to a function during the function call called? Get Solution →

Did you know?

• 💡 Modular design is used in LEGOs, where each brick is like a function for building.
• 💡 The first reusable code libraries appeared in the 1960s, dramatically speeding up software creation.
• 💡 Your brain has dedicated 'functions' for tasks like remembering faces or understanding language.
• 💡 The first computer 'bug' was an actual moth found trapped in a Harvard Mark II relay.
• 💡 Every time you use an ATM, hidden functions handle your money transactions safely.

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