laboursonline – MCQs, Mock Tests | C/C C MCQS Interview Questions

What are different storage class specifiers in C?

1. auto
2. static
3. register
4. All of the above

✅ Correct Answer: 4

What is scope of a variable?

1. Scope of variable is declaration of variable
2. Scope of variable is calling of variable
3. Scope of a variable is the part of the program where the variable may direc
4. None of the above

✅ Correct Answer: 3

How will you print Ã¢â‚¬Å“Hello WorldÃ¢â‚¬Â without semicolon?

1. pass printf statement in conditional statements
2. pass printf statement in while and break the loop
3. Both of the above
4. None of the above

✅ Correct Answer: 2

Swapping of two variable require minimum

1. two variable
2. three variable
3. one variable
4. None of the above

✅ Correct Answer: 1

When should we use pointers in a C program?

1. To get address of a variable
2. For achieving pass by reference in C
3. To implement link list data structure
4. All of the above

✅ Correct Answer: 4

What is NULL pointer?

1. NULL is used to indicate that the pointer doesnt point to a valid location.
2. NULL is used to indicate the end of link list
3. NULL pointer cannot point anything
4. None of the above

✅ Correct Answer: 1

What is Dangling pointer ?

1. pointer point the deallocated memory
2. pointer point to the NULL memory
3. pointer point to the valid memory area
4. All of the above

✅ Correct Answer: 1

What is memory leak?

1. Memory is free by the programmers after use of Heap memory
2. Memory leak occurs when programmers create a memory in heap and forget to d
3. Both of the above
4. None of the above

✅ Correct Answer: 2

What are local static variables ?

1. A local static variable is a variable whose lifetime does not end with a fu
2. It extends for the lifetime of complete program
3. All calls to the function share the same copy of local static variables
4. All of the above

✅ Correct Answer: 4

What is difference between i++ and ++i?

1. i++ is prefix while ++i is postfix
2. i++ is postfix while ++i is prefix
3. Both of the above
4. None of the above

✅ Correct Answer: 2

What is difference between i++ and ++i?

1. i++ return value first then increment the i
2. #NAME?
3. #NAME?
4. 1 and 3 are true

✅ Correct Answer: 4

Execution of every c program starts with-

1. first line
2. main function
3. anywhere
4. None of the above

✅ Correct Answer: 2

smallest executable code in c is -

1. {}
2. void main(){}
3. main
4. All of the above

✅ Correct Answer: 2

Types of loops in c -

1. for
2. while
3. do while
4. All of the above

✅ Correct Answer: 4

Entry control loop are -

1. Every loop is entry control loop
2. those where condition are check at entry level
3. those where condition are check at exit level
4. All of the above

✅ Correct Answer: 2

Exit control loops are those

1. in which condition are check at entry level
2. in which condition are check at exit level
3. Both of the above
4. None of the above

✅ Correct Answer: 2

Entry control loops are-

1. for loop
2. while loop
3. do while loop
4. 1 and 2

✅ Correct Answer: 4

Exit control loop are -

1. for loop
2. while loop
3. do while loop
4. All of the above

✅ Correct Answer: 3

what is HEAP area ?

1. it is used for the objects allocated dynamically
2. it is used for the objects deallocated dynamically
3. HEAP is a memory allocation by int
4. None of the above

✅ Correct Answer: 1

What is stack area ?

1. It is used to store local variables and arguments of a method
2. It is used to allocate dynamic memory
3. Both of the above
4. None of the above

✅ Correct Answer: 1

If we allocate memory by malloc in c then it goes to

1. Heap area
2. stack area
3. virtual memory
4. None of the above

✅ Correct Answer: 1

int a=1; memory allocation is a type of

1. Heap
2. stack
3. both
4. none

✅ Correct Answer: 2

How many keywords are there in c ?

1. 34
2. 33
3. 32
4. None of the above

✅ Correct Answer: 3

Which are the basic data type in c ?

1. int
2. float
3. char
4. All of the above

✅ Correct Answer: 4

void in c language is -

1. keyword
2. function
3. special data type without any value
4. void can be used in place of double

✅ Correct Answer: 3

fabs() in c programming are in-

1. math header file
2. stdlib header file
3. stdio file
4. iostream file

✅ Correct Answer: 1

what is the cyclic nature of data type in c ?

1. they goes infinite when exceed range
2. they give error when exceed range
3. they goes back in cyclic form when exceed range
4. None of the above

✅ Correct Answer: 3

Is nested loop exist in c programming-

1. Yes
2. No
3. Depend on compiler
4. updated version of c language support nested loop

✅ Correct Answer: 1

Nested loop is

1. two loop , one by one run
2. one loop is always a nested loop
3. exit control is always a nested loop
4. loop inside loop

✅ Correct Answer: 4

What is the difference between declaration and definition of function in c ?

1. both are same
2. we always require declaration before definition
3. definition time we allocate memory
4. None of the above

✅ Correct Answer: 3

For recursion we require

1. stack area
2. heap area
3. queue area
4. None of the above

✅ Correct Answer: 1

we can create loop by

1. for loop
2. goto statement
3. recursion
4. All of the above

✅ Correct Answer: 4

exit() function are used to-

1. break the loop
2. exit the function call
3. exit the whole program
4. None of the above

✅ Correct Answer: 3

exit() function were define in -

1. process header file
2. stdlib header file
3. Both of the above
4. None of the above

✅ Correct Answer: 3

which of the following are the modifier in c ?

1. int
2. float
3. char
4. None of the above

✅ Correct Answer: 4

which of the following are modifier in c ?

1. short
2. long
3. signed
4. All of the above

✅ Correct Answer: 4

for creating random number, we use

1. rand() function
2. random() function
3. randno() function
4. All of the above

✅ Correct Answer: 1

rand() function are used to generate random number during execution of program, In which header file it is define ?

1. math
2. stdio
3. stdlib
4. process

✅ Correct Answer: 3

Is that possible to store 32768 in an int data type variable ?

1. Yes
2. No
3. Depend on compiler
4. updated version of c language support nested loop

✅ Correct Answer: 2

for storing number 32768 as a integer, which one is valid ?

1. int
2. long int
3. Integer
4. None of the above

✅ Correct Answer: 2

Null pointers are possible to use in -

1. As an error value
2. As a sentinel value
3. To terminate indirection in the recursive data structure
4. All of the above

✅ Correct Answer: 4

for any type of looping we require-

1. initialization
2. condition
3. increment and decrement
4. All of the above

✅ Correct Answer: 4

without the curly braces, the body of while loop is upto

1. two line
2. one line
3. no body of while
4. None of the above

✅ Correct Answer: 2

int a this type of declaration is treated as:-

1. static
2. extern
3. auto
4. global

✅ Correct Answer: 3

if the declaration of variable is outside the function then it is treated as

1. global variable
2. static variable
3. long variable
4. register variable

✅ Correct Answer: 1

is it possible to create customized header file ?

1. YES
2. NO
3. Can not say
4. None of the above

✅ Correct Answer: 1

is graphical programming possible by c language ?

1. No
2. Yes
3. Depend on compiler
4. None of the above

✅ Correct Answer: 2

Canvas programming in c are those which deal with the

1. header file
2. recursion
3. memory management
4. Geometrical graphics

✅ Correct Answer: 4

c language is-

1. modular programming
2. object oriented programming
3. threading programming
4. All of the above

✅ Correct Answer: 1

Ascii value of A is -

1. 97
2. 65
3. 66
4. 1

✅ Correct Answer: 2