C Quiz-IT-B(Arrays & Pointers)

What is the syntax for declaring a pointer in C?

• int ptr;

• 
  ptr = int;

• 
  int *ptr();

• 
  int *ptr;

What is the size of a pointer variable in C?

• 4 bytes (on a 32-bit system) or 8 bytes (on a 64-bit system)

• 10 bytes

• 2 bytes

• 
  16 bytes

What do the following declaration signify?

char *arr[10];

• arr is a array of 10 character pointers.

• 
  arr is a array of function pointer.

• arr is a array of characters.

• 
  arr is a pointer to array of characters.

What is the syntax for declaring an array in C?

• 
  array_name = [array_size];

• array_name = data_type[array_size];

• 
  array_name[array_size] = data_type;

• data_type array_name[array_size];

What is the difference between array and pointer in C?

• Arrays are a fixed-size collection of elements, while pointers are variables that store memory addresses.

• Arrays cannot be passed as arguments to functions, while pointers can

• Arrays can only store integers, while pointers can store any data type

• Arrays and pointers are the same thing

Choose a correct array statement.

• 
  An array size can not changed once it is created.

• 
  Array element value can be changed any number of times

• To access Nth element of an array students, use students[n-1] as the starting index is 0.

• All the options

What is the output of C Program.?

int main()

{

int a[];

a[4] = {1,2,3,4};

printf("%d", a[0]);

}

• 1

• 
  Compiler Error

• 4

• 2

An array elements are always stored in ________ memory locations.

• 
  sequential

• 
  Random

• Sequential and Random

• 
  None of the options

What is the output of C Program.?

int main() {

int a[3] = {10,12,14};

a[1]=20;

int i=0;

while(i<3)

{ printf("%d ", a[i]);

i++; }

}

• 20 12 14

• 10 20 14

• 10 12 20

• Error

In a C Program if

int a = 5;

Int *ptr = &a;

then the printf statement with

&a, a, *ptr , ptr

• 
  adrress, Value, Value, Adress

  
  

• address, value, value, value

• all address

• All values