Final answer:
The purpose of the isInteger and isReal functions is to determine if a given value is an integer or a real number, respectively. These functions are particularly useful in programming to perform specific actions based on the type of a value.
Step-by-step explanation:
The isInteger function is used to determine if a given value is an integer or not. It returns true if the value is an integer and false otherwise. For example, isInteger(5) would return true, while isInteger(3.14) would return false.
On the other hand, the isReal function is used to determine if a given value is a real number or not. It returns true if the value is a real number and false otherwise. For example, isReal(5) would return true, while isReal('hello') would return false.
Both of these functions are helpful in programming, especially when dealing with different data types. They allow programmers to check the type of a value and perform specific actions based on that information.