35. NULL Pointer : C

NULL Pointer

A pointer doesn't highlight any memory area. It, by and large, focuses on the NULL or 0th memory area, so in straightforward words, no memory is designated to a NULL pointer. 

Null pointer vs Uninitialized pointer - 

• The two are diverse as the Null pointer focuses on the 0th memory area, which implies that it doesn't possess any memory area. 
• Conversely, an uninitialized pointer implies that the pointer possesses trash esteem. 
• The trash worth can be any worth the city worker allots to the pointer, which might highlight some memory area. 

Therefore, Null pointers are liked. 

Null pointer vs Void pointer - 

Null pointer and void pointer might sound like their tedious implications cross-over something over the top, however, they are different as the NULL pointer is worth, and the void pointer is a sort. 

• Null, which implies it isn't highlighting any memory area 
• Void, which implies the worth will be set by what kind of significant worth we store in it. If we compare it to a number, its worth will be int, and assuming we pass a person variable in it, its worth will be scorch, etc. 

Benefits - 

• Instate the pointer variable without allotting a particular location to it. 
• Use it to check whether or not a pointer is genuine. 
• Utilized for examination with different pointers to check whether or not they are highlighting some memory address. 
• Error dealing with on account of C programming. 
• Pass a NULL pointer at places where we would rather not pass a pointer with a legitimate memory address.