Question

Given two int variables distance and speed, write an expression that divides distance by speed using floating point arithmetic, i.e., a fractional result should be produced. (NOTE: Simply write an expression that performs the calculation. Do not assign the result to a variable.)

Answer 1

The expression to perform floating-point division of two integers 'distance' and 'speed' is '(float) distance / speed', which casts 'distance' to a float.

Step-by-step explanation:

To divide two integers distance and speed using floating-point arithmetic and produce a fractional result, you cast one or both of the integers to a floating-point type before performing the division. This can be achieved using the following expression:

(float) distance / speed

Here, distance is explicitly cast to a float, which makes the resulting division operation a floating-point division. This is necessary because if both operands are integers, integer division would occur, and the fractional part of the result would be lost.

Answer 2

To divide two integer variables distance and speed using floating point arithmetic, you can cast either distance or speed to a float before performing the division.

Step-by-step explanation:

To perform floating point arithmetic and calculate the average speed given two integer variables distance and speed, you would need to make sure at least one of the operands is a floating point number. This ensures the division does not perform integer division but rather floating point division, yielding a fractional result. The expression would look like this:

static_cast(distance) / speed

Or alternatively, if you'd prefer to specify the type of the speed:

distance / static_cast(speed)

Either of these expressions will convert one of the integers to a float, ensuring that the division operation results in a floating point number, not an integer.