Answer / susie

Answer :

x=10 y=8

Explanation:

Using ^ like this is a way to swap two variables without
using a temporary variable and that too in a single statement.

Inside main(), void swap(); means that swap is a function
that may take any number of arguments (not no arguments) and
returns nothing. So this doesn’t issue a compiler error by
the call swap(&x,&y); that has two arguments.

This convention is historically due to pre-ANSI style
(referred to as Kernighan and Ritchie style) style of
function declaration. In that style, the swap function will
be defined as follows,

void swap()

int *a, int *b

{

*a ^= *b, *b ^= *a, *a ^= *b;

}

where the arguments follow the (). So naturally the
declaration for swap will look like, void swap() which means
the swap can take any number of arguments.

Answer / shruthi

x=8,y=10

main() { int a=2,*f1,*f2; f1=f2=&a; *f2+=*f2+=a+=2.5; printf("\n%d %d %d",a,*f1,*f2); }

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