Question

Answer the following questions.

1. Explain the difference between if and if...else statement.
2. With the help of flowchart explain the elif statement.
3. With the help of an example, explain while loop.
4. Under what condition will you get an infinite while loop?
5. Describe for loop with the help of an example.​

Answer 1

Step-by-step explanation:

1. Difference between if and if...else statement:

The if statement is used for conditional execution of a block of code. It checks a specified condition and executes the block of code only if the condition is true.

The if...else statement, on the other hand, provides an alternative block of code to be executed when the condition specified in the if statement is false. So, it handles both the true and false conditions.

2. Flowchart for the elif statement:

The elif statement is used in Python to add more conditions to the if...else statement. It stands for "else if" and allows you to check multiple conditions sequentially. Here's a textual description of a flowchart for elif

3. Explanation of while loop with an example:

The while loop is used to repeatedly execute a block of code as long as the specified condition is true. The loop continues until the condition becomes false.

4. Condition for an infinite while loop:

An infinite while loop occurs when the loop condition always evaluates to true, and there is no mechanism to break out of the loop.

5. Description of for loop with an example:

The for loop is used to iterate over a sequence (such as a list, tuple, string, etc.) and execute a block of code for each element in the sequence. Here's an example:

fruits = ["apple", "banana", "orange"]

for fruit in fruits:

print(f"I like {fruit}s")

Answer 2

An if statement checks if a condition is true and performs a specific action if it is. On the other hand, an if...else statement evaluates a condition; if true, it executes one set of instructions and if false, it executes a different set.

What is an elif statement?

An elif statement, short for "else if," presents multiple condition checks sequentially. It functions like a series of if statements but in a more concise manner. If the initial condition in an if statement is false, it moves to check subsequent conditions until a true one is found or executes an ultimate "else" block if none match.

A while loop repeatedly executes a block of code as long as a given condition remains true. For example, a loop can print numbers from 1 to 5 by incrementing a counter within the loop.

An infinite while loop arises when its condition always remains true, causing it to run continuously without stopping unless explicitly terminated. Conversely, a for loop iterates over a sequence by initializing, checking, and updating a variable until a defined limit is reached.