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complementation

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none of the above

vacant bit will be filled by the sign bit

vacant bit will be filled by 0

the outcome is implementation dependent

none of the above

either before or at the beginning of the compilation process

after compilation but before execution

after loading

none of the above

'x' is same as "x"

length of the string "x" is two

Unless otherwise specified, the first name in an enum has the value 1

None of the above

finds the hypotenuse of a triangle with sides a + 2 and b + 3

finds the square root of (a + 2)2 + (b + 3)2

is invalid

finds the square root of 3 * a + 4 * b + 5