C Programming Quiz

Which of the following statements about pointers is correct?

• A pointer stores the value of a variable.

• A pointer stores the memory address of a variable.

• A pointer stores the size of a variable.

• A pointer is used to add two values.

Which of the following is true about sizeof() operator?

• It can be used on any data type.

• It returns the size in bits.

• It can only be used on variables.

• It returns the size in bytes.

What will printf("%d", 5 + 3); output?

• 53

• 8

• 35

• 5 + 3

What is the format specifier for printing an integer in C?

• %c

• %s

• %d

• %f

Which of the following is used to clear memory allocated by malloc()?

• clear()

• free()

• delete()

• reset()

What is the output of the following code? int a = 5, b = 3; printf("%d", a % b);

• 1

• 2

• 3

• 5

Which function is used to dynamically allocate memory in C?

• malloc()

• free()

• sizeof()

• realloc()

Consider the following declaration of a 'two-dimensional array in C: char a[100][100]; Assuming that the main memory is byte-addressable and that the array is stored starting from memory address 0, the address of a[40][50] is

• 4040

• 4050

• 5040

• 5050

What will be the output of the following C code?

• Error because function name cannot be preceded by const

• Sanfoundry.com

• Sanfoundry.com is printed infinite times

• Blank screen, no output

What will be the final value of x in the following C code?

• 3.75

• Depends on compiler

• 24

• 3