Variables in C Programming

This quiz covers variable declaration, initialization, data types, operations on variables, and behavior of expressions involving variables, which will test your understanding of variables in C programming with this quiz.

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Question 1

What is a variable in C?

  • A fixed value

  • A memory location to store data

  • A keyword

  • A preprocessor directive


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Question 2

Which of the following is the correct way to declare an integer variable in C?

  • x int;

  • int x;

  • integer x;

  • x = int;

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Question 3

What is the default value of a local variable in C?

  • 0

  • Garbage Value

  • NULL

  • Undefined

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Question 4

What is the scope of a variable declared inside a function?

  • Global

  • Block

  • Function

  • File

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Question 5

Which data type would you use to store a single character in C?

  • int

  • char

  • string

  • float

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Question 6

Which of the following statements is true about global variables?

  • They are only accessible inside one function

  • Their lifetime ends after the function ends

  • They are declared inside main()

  • They are accessible throughout the program

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Question 7

What happens if you use an undeclared variable in C?

  • It gets initialized to 0

  • Program runs with a warning

  • The compiler assigns memory automatically

  • Compilation error

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Question 8

What will be the value of a in the end?

C 
int a = 5;
int b = a;
b = 10;


  • 5

  • 10

  • 0

  • Garbage Value

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Question 9

Which variable will have the highest scope?

  • Variable declared inside a loop

  • Variable declared inside a function

  • Static variable

  • Global variable

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Question 10

Which keyword tells the compiler to look for a variable’s definition elsewhere?

  • extern

  • static

  • register

  • const

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There are 13 questions to complete.

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