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Chapter 3: Problem 10

Assume a program has the following variable definitions int units; float mass ; double weight; and the following statement: weight \(=\) mass \(*\) units Which automatic data type conversions will take place?

Short Answer

Expert verified
Answer: The 'units' (int) and 'mass' (float) will both be automatically converted to double before the multiplication operation, ensuring consistency and accuracy in the calculation.

Step by step solution

01

Identify variable data types

The given variable definitions are: - int units - float mass - double weight And the statement is: - weight = mass * units
02

Determine the order of data type hierarchy

The order of data types in terms of the amount of data they can store and precision (from least to greatest) can be represented as: 1. int 2. float 3. double
03

Identify the required conversion

According to the data type hierarchy, the operation in the given statement involves int (units) and float (mass) types. Since the result will be stored in a double (weight) variable, the values of 'mass' and 'units' must be converted into a double before performing the multiplication.
04

State the automatic data type conversions taking place

Based on the analysis above, the automatic data type conversions taking place in the given statement are: - 'units' (int) will be automatically converted to double before the multiplication. - 'mass' (float) will be automatically converted to double before the multiplication. After these conversions, the double result of the multiplication operation can be directly assigned to the 'weight' (double) variable.

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