MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A widening conversion changes a value to a data type that can allow for any possible value of the original data. Widening conversions preserve the source value but can change its representation. This occurs if you convert from an integral type to Decimal, or from Char to String .

Detailed explanation-2: -Type conversion (or typecasting) means transfer of data from one data type to another. Implicit conversion happens when the compiler (for compiled languages) or runtime (for script languages like JavaScript) automatically converts data types. The source code can also explicitly require a conversion to take place.

Detailed explanation-3: -Widening conversions (promotion) In a widening conversion, a value in a smaller variable is assigned to a larger variable with no loss of data. Because widening conversions are always safe, the compiler performs them silently and doesn’t issue warnings.

Detailed explanation-4: -A widening conversion of an int or a long value to float, or of a long value to double, may result in loss of precision-that is, the result may lose some of the least significant bits of the value.