Answer Posted / 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.

Describe the header file and its usage in c programming?

1072

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What is volatile keyword in c?

1037

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‘ C’ PROGRAME TO SHOW THE TYPE OF TRANGLE BY ACCEPTING IT’S LENGTH .

2882

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How many types of errors are there in c language? Explain

990

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Explain union. What are its advantages?

1081

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#include show(int t,va_list ptr1) { int a,x,i; a=va_arg(ptr1,int) printf(" %d",a) } display(char) { int x; listptr; va_star(otr,s); n=va_arg(ptr,int); show(x,ptr); } main() { display("hello",4,12,13,14,44); }

1281

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What is meant by high-order and low-order bytes?

1051

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What is sizeof array?

1060

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Explain how can I make sure that my program is the only one accessing a file?

1225

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What is the difference between the local variable and global variable in c?

966

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What is static and auto variables in c?

1091

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write a c program to print the next of a particular no without using the arithmetic operator or looping statements?

3971

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Why can’t we compare structures?

1276

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How to write a multi-statement macro?

1049

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What is the advantage of an array over individual variables?

1241

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