Which data type is typically used to store whole numbers?

The data type that is typically used to store whole numbers is the integer data type, which is represented as "Int." Integers are whole numbers that do not include fractions or decimals, making them ideal for counting, indexing, and performing arithmetic operations that involve whole units.

Using Int provides a straightforward and efficient way to handle and manipulate numerical data that does not require decimal precision. For example, in scenarios such as iterating over arrays, counting occurrences, or handling numeric identifiers, using an integer data type ensures that the values are always whole and can be processed quickly by the computer.

In contrast, other data types like Float are designed for representing decimal numbers and would not be appropriate for whole numbers. Char is used for single characters and is not meant for numerical values. String is meant for sequences of characters, which can include whole numbers but would not be used for mathematical operations as integers are.