Answer / sri

null(\0) is used for strings,and there is difference
between \0 and 0.

Answer / shani chaudhari

null(\0) is used for termination of string meance each and
every string ended with \0 while 0 is mostly related with
binary operations..null(\0) meance nothing but 0 has its own
value and existance. both are different

Answer / guest

NULL('\0')- A string in C is always terminated by a null
character.The ascii value of '\0' is 0
0 - The ascii value of 0 is 48

Answer / guest

ASCII value of 0 is 0,but ASCII value of '\0' is 27.

Answer / salim

I am going to speak in cotext to c language.
NULL is a macro defined in header files such as
stdio.h,stdlib.h,alloc.h,stddef.h,mem.h.The c pre processor
substitutes NULL by the value 0.Its declaration appears to
be like #define NULL 0 in the standard libraries.It is
used to initialise pointers to 0 and helps in portability.
It is a null pointer constant a convention for programmers
to initialise pointers.It is used mainly with pointer.

0 is simply an integer constant.

/0 is a backslash character contant used to indicate end of
string or a string terminator.

Answer / palani222samy

NULL is an the empty value but 0(zero) is an one of the value

Answer / shashwat

Actually binary code of both are same.
0 -> 00000000 NULL
But when this 0 is included in a string or char as

char x = '0';
or char x[20] = "1230";

It is the character zero (not NULL). It has an ASCII of 48
and will be stored as
00110000.

That is why, they have created different zeroes to
represent either the character zero or ASCII value zero.

Answer / 111

What is the difference b/w '\0' and NULL?

The first is the representation for the null character, i.e.,
a character with value zero. It is used as a string
terminator in C.
It is actually an "escape sequence" with an octal zero.

The second is a macro that resolves to a null pointer value.
In C source
code a literal zero is also converted into a null pointer
constant when
it occurs in a pointer context.

The first expression is of type int while the second is of a
pointer
type.

> In which case It is useful?

Use '\0' to terminate strings and NULL to initialise
pointers and set
them to a "safe" value after they have been used.

Answer / madhu

end of the string is indicated by \0 but 0 is a value
thus there is difference between them

Answer / mangal

The nul is used for the string so there is no any character
contain by null
but
The o is an intiger value an they have some meaning fot
that in intiger type

int main() { int i=-1,j=-1;k=0,l=2,m; m=i++&&j++&&k++||l++; printf("%d%d%d%d%d",i,j,k,l,m); }

3 Answers   HCL,

How does free() know explain how much memory to release?

0 Answers  

Explain how can I write functions that take a variable number of arguments?

0 Answers  

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2 Answers   TCS, Unisys, Webyog,

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0 Answers  

Which header file should you include if you are to develop a function which can accept variable number of arguments?

0 Answers   TCS, TISL,

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3 Answers  

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0 Answers  

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Multiply an Integer Number by 2 Without Using Multiplication Operator

0 Answers  

Is javascript based on c?

0 Answers  

Define a structure to store roll no, name and marks of a student. Using the structure of above write a ‘C’ program to create a file “student.dat”. There must be one record for every student in the file. Accept the data from the user.

0 Answers