NULL in C Programming is a special keyword that represents a pointer that is not pointing to any valid memory address. It is typically used to initialize pointers or to indicate that a pointer is not pointing to anything.
To declare NULL in C Programming, simply use the keyword "NULL" followed by a semicolon. This will assign the value of NULL to the pointer, indicating that it is not pointing to anything.
NULL is used in C Programming to indicate that a pointer is not pointing to a valid memory address. This helps to avoid errors and crashes in the program by clearly showing that a pointer is not pointing to anything.
No, you cannot assign a value to NULL in C Programming. It is a reserved keyword that represents a pointer with no valid address. Trying to assign a value to NULL will result in a compiler error.
To check for NULL in C Programming, you can use the conditional "if" statement. For example, if(ptr == NULL) will check if the pointer "ptr" is equal to NULL. You can also use the "!= NULL" conditional to check if a pointer is not equal to NULL.