Quiz

C Language Basics Quiz

01.
Which symbol is used to end statements in C?
• .
• ;
• :
• !
02.
How do you write a single-line comment in C?
• ##
• //
• /* */
• #!
03.
What is the return type of the malloc() function?
• int*
• char*
• void*
• none
04.
What is the output of 'printf("%d", sizeof(char));'?
• 1
• 2
• 4
• 8
05.
Which format specifier is used for a double data type?
• %d
• %f
• %lf
• %c
06.
Which of the following is not a valid identifier in C?
• myVar
• var_1
• 1var
• _var
07.
What is the purpose of 'extern' keyword?
• To declare a local variable
• To declare a global variable available across files
• To hide a variable
• To create a constant
08.
How do you declare a pointer to an integer?
• int &p;
• int *p;
• pointer int p;
• int p*;
09.
What does 'void' indicate in a function definition?
• It returns an integer
• It returns nothing
• It is an empty function
• It is an invalid function
10.
What is 'NULL' in C?
• A value of 0
• An uninitialized pointer
• A macro representing a zero pointer
• An error code
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