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Welcome to the Data Types,Operators and Expressions in C MCQs Page

Dive deep into the fascinating world of Data Types,Operators and Expressions in C with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Types,Operators and Expressions in C, a crucial aspect of C Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Types,Operators and Expressions in C, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C Programming.

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Check out the MCQs below to embark on an enriching journey through Data Types,Operators and Expressions in C. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Types,Operators and Expressions in C. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Types,Operators and Expressions in C MCQs | Page 58 of 66

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Q571.
A register variable is stored in a Register. Where does a Register Present in a Computer?

a.

RAM ( Random Access Memory )

b.

ROM ( Read Only Memory )

c.

CPU (Central Processing Unit )

d.

DMA ( Direct Memory Access )

Discuss
Answer: (c).CPU (Central Processing Unit )
Q572.
Variables of type auto, static and extern are all stored in

a.

ROM

b.

RAM

c.

CPU

d.

Compiler

Discuss
Answer: (b).RAM
Q573.
Find a right answer.

a.

Default value of auto variable = Garbage Value
Default value of static = Garbage Value
Default value of extern = Garbage Value
Default value of register = Garbage Value

b.

Default value of auto variable = zero
Default value of static = zero
Default value of extern = zero
Default value of register = zero

c.

Default value of auto variable = Garbage
Default value of static = zero
Default value of extern = zero
Default value of register = Garbage

d.

Default value of auto variable = zero
Default value of static = Garbage
Default value of extern = Garbage
Default value of register = zero

Discuss
Answer: (c).Default value of auto variable = Garbage
Default value of static = zero
Default value of extern = zero
Default value of register = Garbage
Q574.
Find a correct statement.

a.

Scope of auto variable = local to block or function
Scope of register variable = local to block or function
Scope of static variable = local to block or function
Scope of extern variable = global or available to all functions and blocks

b.

Scope of auto variable = global or available to all functions and blocks
Scope of register variable = global or available to all functions and blocks
Scope of static variable = global or available to all functions and blocks
Scope of extern variable = local to block or function

c.

Scope of auto variable = global or available to all functions and blocks
Scope of register variable = local to block or function
Scope of static variable = global or available to all functions and blocks
Scope of extern variable = local to block or function

d.

Scope of auto variable = local to block or function
Scope of register variable =global or available to all functions and blocks
Scope of static variable =local to block or function
Scope of extern variable = global or available to all functions and blocks

Discuss
Answer: (a).Scope of auto variable = local to block or function
Scope of register variable = local to block or function
Scope of static variable = local to block or function
Scope of extern variable = global or available to all functions and blocks
Q575.
Which among the following is a Local Variable?

a.

register

b.

auto

c.

static

d.

extern

Discuss
Answer: (b).auto
Q576.
Which among the following is a Global Variable?

a.

auto

b.

register

c.

static

d.

extern

Discuss
Answer: (d).extern
Q577.
Choose a correct statement about static variable.

a.

A static global variable can be accessed in other files.

b.

A static global variable can be used only in a file in which it is declared.

c.

A static global variable can not be declared without extern keyword.

d.

Default value of a static variable is -1.

Discuss
Answer: (b).A static global variable can be used only in a file in which it is declared.
Q578.
register float a = 3.14f;

Choose right statement.

a.

Variable a is stored in CPU registers for fast access.

b.

Variable a is converted to int and then stored in a CPU register.

c.

register Storage Class is ignored and treated as
auto float a = 3.14f;

d.

You get a compiler error as you can not store non integer value in a CPU register.

Discuss
Answer: (c).register Storage Class is ignored and treated as
auto float a = 3.14f;
Q579.
What is the difference between Declaration and Definition?

a.

Declaration does allocate memory for a variable.
Definition does allocate memory for a variable.

b.

Declaration does allocate memory for a variable.
Definition does not allocate memory for a variable.

c.

Declaration does not allocate memory for a variable.
Definition does allocate memory for a variable.

d.

Declaration does not allocate memory for a variable.
Definition does not allocate memory for a variable.

Discuss
Answer: (c).Declaration does not allocate memory for a variable.
Definition does allocate memory for a variable.
Q580.
Choose a correct statement regarding automatic variables.

a.

#include<stdio.h>
main()

{
auto int a;
printf("%d", a);
}

//output is compiler error. a is not initialized.

b.

#include<stdio.h>
main()

{
auto int a;
printf("%d", a);
}

//output = 0

c.

#include<stdio.h>
main()

{
auto int a;
printf("%d", a);
}

//output = null

d.

#include<stdio.h>
main()

{
auto int a;
printf("%d", a);
}

//output = some random number

Discuss
Answer: (d).#include<stdio.h>
main()

{
auto int a;
printf("%d", a);
}

//output = some random number
Page 58 of 66

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