Examples of For Loop Applications in Beginner Algorithms

📚 Quick Study Guide

• 🔑 Definition: A 'for' loop is a control flow statement for specifying iteration, which allows code to be executed repeatedly.
• ⚙️ Syntax: `for (initialization; condition; increment/decrement) { // code to be executed }`
• 🔢 Initialization: Executed only once, sets up the loop counter.
• ✅ Condition: Evaluated before each iteration; if true, the loop continues.
• ➕ Increment/Decrement: Updates the loop counter after each iteration.
• 🔄 Applications: Used for array traversal, calculations, pattern generation, and more.
• 💡 Best Practice: Avoid infinite loops by ensuring the condition eventually becomes false.

Practice Quiz

1. What is the primary purpose of a 'for' loop in programming?
   1. A. To define a constant variable.
   2. B. To execute a block of code repeatedly.
   3. C. To declare a new data type.
   4. D. To handle errors in the code.
2. Which part of the 'for' loop is executed only once?
   1. A. The condition.
   2. B. The increment/decrement.
   3. C. The initialization.
   4. D. The code inside the loop.
3. What happens if the condition in a 'for' loop never becomes false?
   1. A. The program terminates immediately.
   2. B. The loop executes once and then stops.
   3. C. The loop becomes an infinite loop.
   4. D. The compiler reports an error.
4. Which of the following is a common application of 'for' loops?
   1. A. Declaring function prototypes.
   2. B. Traversing an array.
   3. C. Defining class structures.
   4. D. Allocating memory.
5. In the 'for' loop `for (i = 0; i < 10; i++)`, how many times will the code inside the loop be executed?
   1. A. 0
   2. B. 9
   3. C. 10
   4. D. 11
6. What does the increment/decrement part of a 'for' loop do?
   1. A. It checks the loop's condition.
   2. B. It updates the loop counter after each iteration.
   3. C. It initializes the loop counter.
   4. D. It defines the loop's starting point.
7. Which of the following is NOT a typical use case for a 'for' loop?
   1. A. Printing a sequence of numbers.
   2. B. Searching for an element in an array.
   3. C. Handling asynchronous events.
   4. D. Calculating the sum of elements in a list.