ICS Computer Science part-2 Chapter-12 Loop Constructs

Important Question for ICS Computer Science Part-2, Important notes for ICS computer Science for all Intermediate Boards.

Chapter-12(Loop Constructs)

1	What is the final value of x after executing the following code: for (int x=0; x <10; x++)
	10	9	0	1
2	What is the value of a after execution of the following code? Int a = 25; for (int c =0; c<4; c++) a = a -1; a = a +3;
	23	24	25	20
3	The body of while loop with multiple statements ends with:
	Right bracket]	Right braces}	Comma,	Semi colon;
4	Which is a loop statement?
	if	if-else	switch	None
5	Semicolon is placed at the end of condition in:
	While loop	Do-while loop	For loop	All
6	While loop is also called:
	Conditional loop	Wend loop	Counter loop	None
7	This means to increase a value by one:
	Modulus	Increment	Decrement	None
8	This statement may be used to stop a loop’s current iteration and begin next one;
	Continue	Break	Terminate	None
9	A for statement contains three expressions: initialization , test, __________ .
	Null	Validation	Increment/decrement	None
10	A special value that marks the end of a list of input data is called:
	Terminal value	Sentinel value	Loop control value	Input value
11	One execution of a loop is known as a (n).
	Cycle	Duration	Iteration	Test
12	How many types of loop are available in c language?
	2	3	4	5
13	While loop structure always executes at least once?
	Do-while	For	While	None
14	Which of the following loop is called counter control loop?
	For	While	Do while	None

 

Q-2: Write short answers
i.    Define loop.
ii.    Write two advantages of loop.
iii.    Define “while” loop.
iv.    Define do-while loop.
v.    Describe the syntax of do-while loop with example.
vi.    Describe the syntax of “for” loop.
vii.    What is “for” loop.
viii.    What is counter controlled loop?
ix.    What is sentinel controlled loop.
x.    Define sentinel value. 
xi.    Describe nested loop.

xii.    Define infinite loop.
xiii.    How many times will the following loop display “ORIAL ACADEMY”.
for (int i =20; i > 0; i++)
{
    printf(“Akram Bhatti”);
}
 

Q-3: Write detail answers
•    Write a program that uses a while loop to enter a number from the user and then display it. The loop is terminated when the user enters -1.
•    Explain “for” loop? Explain its working.