write in c++

The Bouncer of "foo bar" has asked our help to write a program that determines whether a person should be allowed to enter the bar or not. The program should take age as the user input (integer), and print one of the following statements depending on the input If a person is 21 years or older, then print "You are allowed to go inside the bar If a person is below 21 years, then print You are not allowed to go inside the bar Make sure your program validates user input. A person cannot have a negative age. If the user inputs a negative value, print "Invalid age For example: Test Input Result //test case 7 - Invalid age -2 Enter the age: Invalid age Wtest case 8 - allowed inside 35 Enter the age: You are allowed to go inside the bar //test case 9 - not allowed inside 15 Enter the age: You are not allowed to go inside the bar