Discussion
When a variable of data type double is converted into float, then
Answer: A
Correct answer: Rounding takes place
Narrowing a double to a float is a value conversion, not a reinterpretation of bits. If the value cannot be represented exactly in single precision, the result is one of the two nearest representable values, chosen according to the current rounding mode - normally to nearest.
So it is rounding rather than truncation, and describing it as dropping the low-order bits is wrong in both senses: the exponent field differs too, and mantissa bits are rounded rather than discarded. If the magnitude is too large for float, the result is infinity.
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