what is a NULL Pointer in c | C programming interview questions | wikitechy.com

Null pointer is a pointer which points to nothing but uninitialized pointer may point to anywhere.

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[kalieswaran]

The macro NULL is defined as an implementation-defined null pointer constant, which in C99 can be portably expressed as the integer value 0 converted implicitly or explicitly to the type void* .

[lavanyaumapathy]

A pointer is a variable which contains the address in memory of another variable. We can have a pointer to any variable type. The unary or monadic operator & gives the ``address of a variable''. The indirection or dereference operator * gives the ``contents of an object pointed to by a pointer''.

[geethachinnapaiyan]

A null pointer constant can be converted to any pointer type (or pointer-to-member type), which acquires a null pointer value.

[monishamoni.]

Null pointer is a special reserved value of a pointer. A pointer of any type has such a reserved value. Formally, each specific pointer type ( int *, char * etc.) has its own dedicated null-pointer value.

[monishamoni.]

Null pointer is a special reserved value of a pointer. A pointer of any type has such a reserved value. Formally, each specific pointer type ( int *, char * etc.) has its own dedicated null-pointer value. Conceptually, when a pointer has that null value it is not pointing anywhere.

[saranrajs]

Jump to C - In C, two null pointers of any type are guaranteed to compare equal. The macro NULL is defined as an implementation-defined null pointer constant, which in C99 can be portably expressed as the integer value 0 converted implicitly or explicitly to the type void* .

[deenasteyn]

computing, a null pointer has a value reserved for indicating that the pointer does not refer to a valid object. Programs routinely use null pointers to represent conditions such as the end of a list of unknown length or the failure to perform some action;

[agilan]

Leading the fixfest is a trap-crash turned up by Cisco's Matthew ... If ntpd is configured with the trap service enabled, a malformed packet causes a null pointer dereference and crash it.

[jagadeeshwarank]

Null pointer in c language. Answer: A pointer which can points any type of data is known as void pointer or generic pointer. For example:.

[s.imayabharathi]

Null pointer is a special reserved value of a pointer. A pointer of any type has such a reserved value. Formally, each specific pointer type ( int *, char * etc.) has its own dedicated null-pointer value. Conceptually, when a pointerhas that null value it is not pointing anywhere.

[rachelr]

An introduction to the C++ Language for C programmers. ... Most ANSI C programs will compile without change using a C++ compiler. .... Default parameters allow for the invocation of functions with no values for those parameters If so, and if the derived class does not implement this function, then the implementation in ...

[music-patiencealwayspaysof]

In C and C++, the keyword was NULL, and what NULL really was was 0. It was decided that "0x0000" was never going to be a valid pointer to an object, and so that is the value which gets assigned to indicate that it is not a valid pointer.

[vigneshjollyman]

Collection of extended interviews with artists from all walks of lifeHighlights: A Fully Volunteer-Run Effort, Aims

[samuelsam]

NULL pointer in c programming. NULL pointer: Literal meaning of NULL pointer is a pointer which is pointing to nothing. NULL pointer points the base address of segment. Examples of NULL  ...

[aishusekar]

Interview Basics contain Interview English lessons on Commonly used Interview Questions and Answers

[samuelsam]

A list of top 50 frequently asked C programming interview questions and answers are given below. ... A pointer that doesn't refer to any address of a value but NULL, is known as NULL pointer.

[hemamalinig]

Null pointer is a pointer which points to nothing but uninitialized pointer may point to anywhere.

[aishusekar]

NULL Pointer is a pointer which points to nothing. NULL pointer points to base address of segment.

[scottminikhiem]

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[geethachinnapaiyan]

NULL Pointer is a pointer which is pointing to nothing.