Variable Introduction in C - Quiz

Which of the following is a valid variable name declaration?

Aint ;a5;
Bint _a4;
Cint #a6;
Dint @a2;

Which of the following is not a valid variable name declaration?

Aint a;
Bint a_5;
Cint _g;
Dint 6_d;

In case of ordinary int variables

Ano bit is reserved for sign
Brightmost bit is reserved for sign
Cleftmost bit is reserved for sign
DNone

C programs are converted from high level to machine level language with the help of

AOS
BEditor
CCompiler
DNone

Which of the following is correct for variable names in C?

AVariable names cannot start with a digit
BThey can contain alphanumeric characters as well as special characters
CVariable can be of any length
DIt is not an error to declare a variable to be one of the keywords(like goto, static)

Which of following is not a valid name for a C variable?

Anewdelhi
Bnew_delhi
Cnew delhi
Dnone

Which one is not a c keyword

Aauto
Bextern
Cregister
Dmain

What will be the output of the following program?

 #include"stdio.h"
main()
{
/* assuming that the i is not defined in in any other file */	
 extern int i;
 i = 10 ;
 printf("%d", i) ;
}

A10
CCompile time error
DLinker Error

What is the maximum length of a variable name in C language?

A8 characters
B16 characters
C32 characters
DThere is no limit

Which symbol is used for the assignment of a value to a variable in C language?

A ===
B ==
C=>
D=

Results:
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Variable Introduction in C - Quiz

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Q: Which of the following is a valid variable name declaration?

A. int ;a5;
B. int _a4;
C. int #a6;
D. int @a2;

Correct Option: B
Remarks:

Explanation:

Variable name can start with only two special characters, which are _(underscore) and $(doller).

Q: Which of the following is not a valid variable name declaration?

A. int a;
B. int a_5;
C. int _g;
D. int 6_d;

Correct Option: D
Remarks:

Explanation:

Variable name cannot start with a digit.

Q: In case of ordinary int variables

A. no bit is reserved for sign
B. rightmost bit is reserved for sign
C. leftmost bit is reserved for sign
D. None

Correct Option: C
Remarks:

Explanation:

In case of ordinary int variables leftmost bit is reserved for sign.

Q: C programs are converted from high level to machine level language with the help of

A. OS
B. Editor
C. Compiler
D. None

Correct Option: C
Remarks:

Explanation:

C programs are converted from high level to machine level language with the help of Compiler.

Compiler: A compiler is a software program that transforms high-level source code that is written by a developer in a high-level programming language into a low-level object code (binary code) in machine language, which can be understood by the processor. The process of converting high-level programming into machine language is known as compilation.

Q: Which of the following is correct for variable names in C?

A. Variable names cannot start with a digit
B. They can contain alphanumeric characters as well as special characters
C. Variable can be of any length
D. It is not an error to declare a variable to be one of the keywords(like goto, static)

Correct Option: A
Remarks:

Explanation:

Variable names cannot start with a digit.

Q: Which of following is not a valid name for a C variable?

A. newdelhi
B. new_delhi
C. new delhi
D. none

Correct Option: C
Remarks:

Explanation:

new delhi is not a valid name for a C variable, because of space.

Q: Which one is not a c keyword

A. auto
B. extern
C. register
D. main

Correct Option: D
Remarks:

Explanation: main

Q: What will be the output of the following program?

 #include"stdio.h"
main()
{
/* assuming that the i is not defined in in any other file */	
 extern int i;
 i = 10 ;
 printf("%d", i) ;
}

A. 10
C. Compile time error
D. Linker Error

Correct Option: D
Remarks:

Explanation: Linker Error
Undefined symbol 'i'

Q: What is the maximum length of a variable name in C language?

A. 8 characters
B. 16 characters
C. 32 characters
D. There is no limit

Correct Option: D
Remarks:

Explanation:

Answer: d) There is no limit

Explanation: There is no specific limit on the length of a variable name in C language. However, it is recommended to keep the variable names short and meaningful.

Q: Which symbol is used for the assignment of a value to a variable in C language?

A. ===
B. ==
C. =>
D. =

Correct Option:
Remarks:

Explanation:

Answer: d) =

Explanation: The symbol "=" is used for the assignment of a value to a variable in C language. For example, "x = 10;" assigns the value 10 to the variable x.

Variable Introduction in C - Quiz

Which of the following is a valid variable name declaration?

Which of the following is not a valid variable name declaration?

In case of ordinary int variables

C programs are converted from high level to machine level language with the help of

Which of the following is correct for variable names in C?

Which of following is not a valid name for a C variable?

Which one is not a c keyword

What will be the output of the following program? #include"stdio.h" main() { /* assuming that the i is not defined in in any other file */ extern int i; i = 10 ; printf("%d", i) ; }

What is the maximum length of a variable name in C language?

Which symbol is used for the assignment of a value to a variable in C language?

What will be the output of the following program?
#include"stdio.h" main() { /* assuming that the i is not defined in in any other file */ extern int i; i = 10 ; printf("%d", i) ; }