puts(" hello ");

puts( hello );

printf(" %s \ n", " hello ") ;

puts( " hello \ n ") ;

is illegal

keeps on printing Paul

prints Paul once

none of the above

empty

second( ) ; putchar ( 'a' );

putchar( 'a' ) ; second(); printf ("%c", 'a' );

none of the above

will not compile successfully

prints 4525

prints 2525

none of above

ab

abcdef

abcdef, followed by garbage

none of above