C Programming: While Loop

What kind of loop is discussed at the beginning of the session?

While statement

In a while loop, what happens if the expression is false?

The loop exits and the next statement outside the loop is executed

What is the difference between an if block and a while loop when the expression is true?

In an if block, the loop is exited immediately after executing a statement; in a while loop, execution goes back to the expression

What does the session aim to illustrate using a simple program?

The functionality of a while loop Signup and view all the answers

What triggers the termination of input in the simple program discussed?

-1 is entered as an integer Signup and view all the answers

In a while loop, what is the significance of checking if a equals -1?

It determines whether to enter or exit the loop Signup and view all the answers

What would happen if 'a' is initially set to -1 in the simple program?

'a' would not enter the loop at all Signup and view all the answers

What is the purpose of initializing the variable 's' to 0 before entering the loop?

To ensure that the sum starts from 0 before adding the input numbers Signup and view all the answers

What is the significance of the condition 'a != -1' in the while loop?

It ensures that the loop continues executing until -1 is entered as input Signup and view all the answers

If the input sequence is 5, 10, -3, -1, what will be the final value of 's' (the sum)?

12 Signup and view all the answers

What is the purpose of the statement 's = s + a' inside the loop?

To add the current input number 'a' to the running sum 's' Signup and view all the answers

If the input sequence is 2, 4, 6, 8, -1, what will be the final value of 'a'?

-1 Signup and view all the answers

What is the term used to describe a single execution of the while loop?

Iteration Signup and view all the answers

If the input sequence is -5, 10, 15, -1, what will be the final value of 's' (the sum)?

20 Signup and view all the answers

What happens if the first input number is -1?

The loop will not execute, and 's' will remain 0 Signup and view all the answers

What is the purpose of the statement 'scanf("%d", &a)' inside the loop?

To read the next input number and store it in 'a' Signup and view all the answers

If the input sequence is 3, 6, 9, 12, -1, what will be the number of iterations of the loop?

4 Signup and view all the answers