Answer Posted / aravind

Extern is nothing but a memory storage type.If we declare extern before the function than the variable can be accessed by that function not only locally but externally too.
extern int a=4
Int fun (int x)
{
x=a;
print gives a=4

#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); }

1238

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What will the preprocessor do for a program?

1013

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write a programming in c to find the sum of all elements in an array through function.

2111

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Why do we use header files in c?

1014

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if a is an integer variable, a=5/2; will return a value a) 2.5 b) 3 c) 2 d) 0

1878

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Explain how many levels deep can include files be nested?

1023

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What is the use of getchar() function?

1069

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I came across some code that puts a (void) cast before each call to printf. Why?

1149

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How can I make it pause before closing the program output window?

989

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What is page thrashing?

1025

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If null and 0 are equivalent as null pointer constants, which should I use?

1114

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What is new line escape sequence?

1262

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the portion of a computer program within which the definition of the variable remains unchanged a) mode b) module c) scope d) none

997

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What is sizeof c?

999

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Using which language Test cases are added in .ptu file of RTRT unit testing???

4216

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