What is the difference between null pointer and pointer?

NULL Pointer is a pointer which is pointing to nothing. In case, if we don’t have address to be assigned to a pointer, then we can simply use NULL. NULL vs Uninitialized pointer – An uninitialized pointer stores an undefined value.

What is the difference between null and void?

The difference between null and void as term for nothing stems from their place in physical space. A void is nothing but takes up space; null is nothing at all. In other words, you could measure a void but null offers nothing to measure. 4.1 Void is used to indicate that a function/method does not return any data type.

What is the difference between null pointer and void pointer Mcq?

– A pointer is initialized as NULL if we are not aware of its value at the time of declaration. -Whereas, Void pointers are general-purpose pointers which do not have any type associated with them and can contain the address of any type of variable.

What is a void pointer in C?

void pointer in C / C++ A void pointer is a pointer that has no associated data type with it. A void pointer can hold address of any type and can be typcasted to any type.

What is void and null pointer?

Void refers to the type. Basically the type of data that it points to is unknown. Null refers to the value. It’s essentially a pointer to nothing, and is invalid to use.

What is void pointer and when it is used?

The void pointer in C is a pointer which is not associated with any data types. It points to some data location in the storage means points to the address of variables. It is also called general purpose pointer. In C, malloc() and calloc() functions return void * or generic pointers.

Is the null pointer the same as the uninitialized pointer?

Originally Answered: IS NULL pointer same as uninitialized pointer? No. “Uninitialized” means the variable holding pointer hasn’t been assigned a value. “NULL” means that it has been assigned a value of 0.

What is the difference between null and zero?

Although they sound similar, the terms ‘zero’ and ‘null’ indicate different values. A ‘zero’ value refers to any numeric values, which may comprise to any of the integer, float, short or long etc data types, whereas a ‘null’ value refers to nothing, means there is an empty value, which does not indicate anything.