## Issue#1189: help me solve this problem,by making changes in the body of class.

• You will create a class Person and write a constructor that takes an integer, initial_Age. In this constructor, you should check that the initial_Age is not negative because we can't have people with negative ages.

If the initial_Age is negative, set the instance's age equal to zero then print

"This person is not valid, setting age to 0."


without the <g class="gr_ gr_58 gr-alert gr_gramm undefined Punctuation multiReplace" data-gr-id="58" id="58">quotations..</g>

Inside of this class, you will also create an instance variable called age and if initial_Age is not negative, then you will set age to equal the value of initial_Age. In addition, you will write an instance method, amIOld(), that prints whether people are old or not to the console.

In amIOld(), do the following things:

• If the age of the Person instance is less than 13, then print "You are young."
• If the age of the Person instance is equal or greater than 13, but less 18, print "You are a teenager."
• Otherwise, print "You are old."

In addition, create an instance function called yearPasses() that increases the age of the person instance by one.

Much of the structure of the code is given to you below, but in the future, you will write this. The code that will create instances of your Person class is in the main function. You may not understand it all yet, but take a look just to see what's going on. Do not change any of the variable names or remove any of the code given.

Input Format

<g class="gr_ gr_63 gr-alert gr_gramm undefined Grammar multiReplace" data-gr-id="63" id="63">First</g> line contains T, <g class="gr_ gr_62 gr-alert gr_gramm undefined Grammar only-ins doubleReplace replaceWithoutSep" data-gr-id="62" id="62">number</g> of test cases. Each test case contains an integer age, representing <g class="gr_ gr_61 gr-alert gr_gramm undefined Grammar only-ins doubleReplace replaceWithoutSep" data-gr-id="61" id="61">age</g> of the person.

Constraints
1T4
5age30

Output Format

The code that will test your methods is already in the editor. All you have to do is edit the methods given to you in the editor so that they perform correctly as stated above. If your methods are implemented correctly, each <g class="gr_ gr_67 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="67" id="67">testcase</g> will print out either two or three lines.

If the age is less than zero, then your program should print out:

This person is not valid, setting age to 0.
You are young.
You are young.


If the age is equal or greater than 0, then your program should print out two lines. The first line that the program prints out should be the output of amIOld() on the current age. Then, three years pass via yearPasses() and the second line the program prints should be the output of amIOld() after the time has passed.

Sample Input

4
-1
10
16
18


Sample Output

This person is not valid, setting age to 0.
You are young.
You are young.

You are young.
You are a teenager.

You are a teenager.
You are old.

You are old.
You are old.


Explanation

For the first <g class="gr_ gr_70 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="70" id="70">testcase</g>, the age is less than 0 so we set the age to 0.Three years pass and the age is 3. So we print out:

This person is not valid, setting age to 0.
You are young.
You are young.


For the second <g class="gr_ gr_71 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="71" id="71">testcase</g>, the age is 10, which is considered young according to our program. Three years pass and the age is 13. 13 is considered a 'teenager' age so we print out:

You are young.
You are a teenager.


For the third <g class="gr_ gr_72 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="72" id="72">testcase</g>, the age is 16, which is the age of a teenager. Three years pass and the age is 19. 19 is considered an 'old' age according to our program so we print out:

You are a teenager.
You are old.


For the last <g class="gr_ gr_73 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="73" id="73">testcase</g>, the age is 18, which is considered an old age according to our program. Three years pass and the age is 21. 21 is still considered old so we print out:

You are old.
You are old.class Person {    public int age;     	public Person(int initial_Age) {       initial_Age=age;        if(initial_Age<0)       {           age=0;           Console.WriteLine("This person is not valid, setting age to 0.");       }    }     public void amIOld() {      if(age<13)          Console.WriteLine("You are young.");         else if((age>=13) && (age<18))             Console.WriteLine("You are a teenager.");// Do some computations in here and print out the correct statement              else             Console.WriteLine("You are old.");     }     public void yearPasses() {        age=age+1;// Increment the age of the person in here     }static void Main(String[] args) {        int T=int.Parse(Console.In.ReadLine());        for (int i = 0; i < T; i++) {            int age=int.Parse(Console.In.ReadLine());            Person p=new Person(age);             p.amIOld();                for (int j = 0; j < 3; j++) {                  p.yearPasses();                }                p.amIOld();                Console.WriteLine();        }    }}

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