Pointers

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

Which of the following comments about arrays and pointers is/are not true?

• Both are exactly same

• Array is a constant pointer

• Pointer is an one-dimensional and dynamic array

• All of these

The declaration

int(*p) [5];     

means

• p is one dimensional array of size 5, of pointers to integers.

• p is a pointer to a 5 elements integer array.

• The same as int *p[

• None of these

What we will not do with function pointers?

• Allocation of memory

• De-allocation of memory

• Both A & B

• None of the above

What are the mandatory part to present in function pointers?

• &

• return value    

• data type

• None of the mentioned

Which of the following can be passed in function pointers?

• variables

• data types

• functions

• objects

The mem functions are meant for

• returning a pointer to the token

• manipulating objects as character arrays

• returning a pointer for implemented-defined string

• returning a pointer to first occurrence of string in another string

     What is the return type of malloc() or calloc()?

• int *  

• int **

• void *

• void **

Which function is used to delete the allocated memory space?

• Dealloc()    

• free()

• Both a and b

• either a or b

What is the output of the following program int main()

{  

 int a = 20;  

 //a memory location = 1234   

printf("%d %d %d %d", a, &a, *(&a));  

 return 0; }

• 20 20 20

• 20 1234 1234

• 20 1234 20

• 1234 20 1234