What is null character in c

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Also, in the case of string , you are indexing out of the boundaries of the string 's memory. You are lucky your code doesn't crash. Oliver Charlesworth Oliver Charlesworth k 30 30 gold badges silver badges bronze badges. RedX RedX 14k 1 1 gold badge 49 49 silver badges 71 71 bronze badges.

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Improve Article. Save Article. Like Article. In all cases, it is an integer constant with the value 0, it is just described in different ways. If any pointer is being compared to 0 , then this is a check to see if the pointer is a null pointer. This 0 is then referred to as a null pointer constant.

It is a character with all bits set to zero. This has nothing to do with pointers.