C Objective Questions for Beginners

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Question: 1

What is output of below program?
int main()
{
const int a = 10;
printf("%d",++a);
return 0;
}

(A) 11
(B) 10
(C) Compilation Error
(D) 0

Compiler
Level: Beginner Category: operators

Question: 2

Library function getch() belongs to which header file?

(A) stdio.h
(B) conio.h
(C) stdlib.h
(D) stdlibio.h

Compiler
Level: Beginner Category: function

Question: 3

When C Language was invented?

(A) 1970
(B) 1972
(C) 1978
(D) 1979

Compiler
Level: Beginner Category: other

Question: 4

How many loops are there in C

(A) 2
(B) 3
(C) 4
(D) 1

Compiler
Level: Beginner Category: loops

Question: 5

How may times CppBuzz.com is printed?
int main()
{
int a = 0;
while(++a++);
{
    printf("CppBuzz.com");
}

return 0;
}

(A) 1 time
(B) 0 time
(C) Infinite Times(Until Stack overflows)
(D) Error: Lvalue Required

Compiler
Level: Beginner Category: loops

Question: 6

How many times CppBuzz.com is printed?
int main()
{
int a = 0;
while(++a)
{
    printf("CppBuzz.com");
}

return 0;
}

(A) 1 time
(B) It depends on the size of int
(C) Infinite Times(Until Stack overflows)
(D) Error

Compiler
Level: Beginner Category: loops

Question: 7

How many times CppBuzz.com is printed?
int main()
{
int a = 0;
while(a)
printf("CppBuzz.com");

return 0;
}

(A) 1 time
(B) Compilation Error
(C) 0 time
(D) Infinite Times(Until Stack Overflows)

Compiler
Level: Beginner Category: loops

Question: 8

How many times CppBuzz.com is printed?
int main()
{
int a = 0;
while(a++)
printf("CppBuzz.com");

return 0;
}

(A) 1 time
(B) 0 time
(C) Infinite times(Until Stack is overflow)
(D) 2 times

Compiler
Level: Beginner Category: loops

Question: 9

int main()
{
    int a = 10.5;
    printf("%d",a);
    return 0;
}

(A) 10.5
(B) 10
(C) 0
(D) Compilation Error

Compiler
Level: Beginner Category: datatype

Question: 10

Which of the following is executed by Preprocessor?

(A) #include<stdio.h>
(B) return 0
(C) void main(int argc , char ** argv)
(D) None of above

Compiler
Level: Beginner Category: datatype

Question: 11

What should be the output:
int main()
{ 
    int a = 10/3;
    printf("%d",a); 
    
    return 0;
}

(A) 3.33
(B) 3.0
(C) 3
(D) 0

Compiler
Level: Beginner Category: datatype

Question: 12

int main()
{ 
    int a = printf ("CppBuzz.com");
    printf("%d", a);
    return 0;
}

(A) Compilation Error
(B) 0
(C) CppBuzz.com
(D) CppBuzz.com11

Compiler
Level: Beginner Category: function

Question: 13

Which programming language is more faster among these?

(A) Java
(B) PHP
(C) C
(D) Visual Basic

Compiler
Level: Beginner Category: other

Question: 14

//This program is compiled on 32 bit DEV-C++ 
int main()
{

char *ptr1, *ptr2;
printf("%d %d", sizeof(ptr1), sizeof(ptr2));

return 0;
}

(A) 1 1
(B) 2 2
(C) 4 4
(D) Undefined

Compiler
Level: Beginner Category: pointers

Question: 15

int main()
{
     int x = 10;
	{
	    int x = 0;
	    printf("%d",x);
	}
    return 0;
}

(A) 10
(B) Compilation Error
(C) 0
(D) Undefined

Compiler
Level: Beginner Category: loops

Question: 16

Is the following statement a declaration or definition

extern int i;

(A) Declaration
(B) Definition

Compiler
Level: Beginner Category: storgeclass

Question: 17

int main()
{
extern int i;
i = 20;
printf("%d", sizeof(i));
return 0;
}

(A) 20
(B) 0
(C) Undefined reference to i
(D) Linking Error

Compiler
Level: Beginner Category: storgeclass

Question: 18

How many main() function we can have in our project?

(A) 1
(B) 2
(C) No Limit
(D) Depends on Compiler

Compiler
Level: Beginner Category: function

Question: 19

Is it possible to run program without main() function?

(A) Yes
(B) No

Compiler
Level: Beginner Category: function

Question: 20

Numbers are stored and transmitted inside a computer in which format?

(A) binary form
(B) ASCII code form
(C) decimal form
(D) alphanumeric form

Compiler
Level: Beginner Category: other

Question: 21

The ASCII code of ‘A’ is?

(A) 66D
(B) 41H
(C) 0100 0010
(D) 0110 0011

Compiler
Level: Beginner Category: other

Question: 22

The ASCII code of ‘0’ (zero) is?

(A) 48D
(B) 32H
(C) 0011 1000
(D) 42H

Compiler
Level: Beginner Category: loops

Question: 23

In compilation process at what sequence Preprocessor comes into picture?

(A) 1
(B) 2
(C) 3
(D) 4

Compiler
Level: Beginner Category: preprocessor

Question: 24

Preprocessor includes content of header files added in source code?

(A) Yes
(B) No

Compiler
Level: Beginner Category: preprocessor

Question: 25

Does this program get compiled successfully?

#include stdio.h

int main()
{
	printf("CppBuzz.com");
	return 0;
 	
}

(A) Yes
(B) No
(C) Depends on Compiler

Compiler
Level: Beginner Category: loops

C Objective Questions for Beginners

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