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Programming in C MCQ - Functions and Recursions

21 void can be used

22 Any C program

23 The following program
main ()
{ int a = 4;
change { a };
printf ("%d", a);
}
change (a)
int a;
{
printf("%d", ++a);
}
outputs

change (a) , prints 5 but the value of 'a' in main ( ) is still 4. So main( ) will print 4.

24 The following program
main()
{
inc(); inc(); inc();
}
inc()
{
static int x;
printf("%d", ++x);
}

25 The following program
main()
{
int abc();
abc ();
( *abc) ();
}
int abc( )
{
printf ("come");
}

The function abc can be invoked as abc( ) or ( *abc ) ( ). Both are two different ways of doing the same thing.

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Question:

Use of macro instead of function is recommended

A. when one wants to reduce the execution time
B. when there is a loop with a function call inside
C. when a function is called in many places in a program
D. both (A) and (B)

Correct answer: D

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