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Thread: java application that calculates an exponential function

  1. #1
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    Default java application that calculates an exponential function

    There is an error in my code that pops when I tried to execute my java application for an exponent function that I wrote. Here is my code and here is the error is generated when I run my code:

    //a java application that calculates the power of an integer in a method that the user creates
    //and uses a while loop to do so. User cannot use any Math class methods to perform this calculation
     
    import java.util.Scanner;
     
    public class exponentiation{
     
    //main method begins execution of java application
     
    public static void main(String[] args){
     
    	int base; //declaration for base of exponent
    	int power;//declaration for the power of the exponent
    	int counter=1;//declares and initializes counter for while loop
    	int exponent;//declares exponent function that will be used in the while loop
     
     Scanner input=new Scanner(System.in);
     
    	System.out.println("Entered the base for exponent function:");
    	base=input.nextInt();
     
    	System.out.println("Entered the power for exponent function:");
    	power=input.nextInt();
     
    	System.out.printf("The value of the exponent function is %d", integerPower(base,power));
     
    }//end main method
     
    //begin method integerPower that calculates the exponent funtion
     
    public static int integerPower(int base,int power){
     
    	while(power>=counter){
     
     
    		power=power+counter;
               exponent=base**power;
     
    	}//end while loop
     
    	return exponent;
     
    }// end method integerPower
     
    }//end class exponentiation

    Here is the error that is generated:

    C:\Users\.......\Desktop\chapter 6 java excercises\exponentiation.java:37: error: illegal start of expression
    exponent=base**power;
    ^
    1 error

    Tool completed with exit code 1
    Why is it an illegal start of an expression? I didn't think you needed to used if statements for a whileloop.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: java application that calculates an exponential function

    You should wrap the error message in code tags to preserve formatting (keep the ^ beneath the error)

    Java does not have a ** operator. Look at the Math class for methods to do that operation.
    If you don't understand my answer, don't ignore it, ask a question.

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