Question

start

    Call a method to get the interest.

    Output the interest to the user.

stop

Write
 a method with a return type that inputs the principal from the user, 
calculates the interest and returns the value of the calculated 
interest.

Answer 1

//function to accept principal amount as argument and return the interest
  double calculator(double principal)
   {
       double rate=9.2;//assign the interest rate
       double annualInterest; //declare annualInterest
       annualInterest = (principal * rate)/100; //compute the interest amount
       return annualInterest;//return the annual interest
   }