Answer / susie

Answer :

hello

Explanation:

The comma operator has associativity from left to right.
Only the rightmost value is returned and the other values
are evaluated and ignored. Thus the value of last variable y
is returned to check in if. Since it is a non zero value if
becomes true so, "hello" will be printed.

void ( * abc( int, void ( *def) () ) ) ();

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