Current Affairs Quiz 2024GKCourses AptitudeADRE 2.0EnglishUGC NET

Algorithms for problem solving - C programming MCQs with Answers

Download PDF

C programming language algorithms quiz & multiple choice questions(mcqs) and answers are available to download in PDF for free. These objective type questions with Answers are useful for preparations of competitive exams like CBSE NET, GATE, NIELIT, BCA, B.Sc. MCA, M.Sc. B.Tech, M.Tech, BE, ME etc.
Go To Download Page
(1) Given in the following code segment: 

	void main(void)
	{
		char x='\0';
		char n='N';
		printf("%u""%s\n",&n, &n);
	}

What will be the result of execution?

[A] ddddd N(where d represents any digit)
[B] 78 N
[C] 78 garbage
[D] compilation error

Comment

Answer: Option [A]

(2) Given in the following program: 

	main()
	{
		int x=49;
		for (;x;)
		x--;
		printf("%d\n",x);
	}

What will be the output of the program?

[A] 49
[B] 0
[C] -49
[D] none of these

Comment

Answer: Option [B]

For all non-zero values of x the for will execute. x is decremented from 49 to 0. Hence 0 is printed in the screen.

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

Article and Schedule Quiz Start Test!
(3) Given in the following program: 

	main()
	{
		int x=3, y=2;
		dp(x/y)
	}

What will be the output of the program?

[A] prints x/y=1
[B] prints #e=1.5
[C] prints #x/y=1
[D] none of tehes

Comment

Answer: Option [A]
(4) In the following code segment: 

	int z,x=5,y=-10,a=4,b=2;
	z=x++ - --y* b/a;

What will be the final value of z?

[A] 5
[B] 6
[C] 10
[D] 11

Comment

Answer: Option [C]

The post increment operator is associated with the variable x. So the current variable is considered i.e. x=5.

The pre increment operator is associated with the variable y. So the value of y decreses by 1. That is y=-11.

Multiplication operator and division operator has the same precedence. So the first one is executed first.

So the expression is:

z=5-(-11)*2/4

=5-(-22/4)

=5-(-5)

=10

(5) Suppose that x is initialized as: 

	short int x; /*assume x is 16 bits in size*/
	What is maximum number that can be printed using
	printf("%d\n",x);
[A] 127
[B] 128
[C] 255
[D] 32767

Comment

Answer: Option [D]

By default short integer is signed. 1 bit is reserveed for sign i.e. only 15 bits are available.

So, the largest number will be:

215+214+..........+upto 20

i.e. 32767

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

LEAVE A COMMENT