C$++$ Coding only.

A prime number is an integer greater than $1$ that is evenly divisible by only $1$ and itself. For example, the number $5$ is prime because it can only be evenly divided by $1$ and $5.$ The number $6,$ however, is not prime because it can be divided by $1,2,3,$ and $6.$

Write a simple Boolean function named isPrime, which takes an integer as an argument and returns true if the argument is a prime number, and false otherwise. Demonstrate the function in a complete program.

A prime number is an integer greater than $1$ that is evenly divisible by only $1$ and itself. For example, the number $5$ is prime because it can only be evenly divided by $1$ and $5.$ The number $6,$ however, is not prime because it can be divided by $1,2,3,$ and $6.$

Write a Boolean function named isPrime, which takes an integer as an argument and returns true if the argument is a prime number, and false otherwise. Demonstrate the function in a complete program.