Thread: Completely clueless as to how to do this assignment.

Hey everyone,

So here is the assignment that was given to me:
2d060e66f10d1c03c7a7c9e030b55057.jpg

The assignment is based off of using the if statements and I'm just not familiar with how to start this. The following is how to calculate heart rate and such: Training Heart Rate using the Karvonen Formula

The sample "guide" they showed me if I needed a reference was this:

PHP Code:

/**
 * Description for 4.03 Target Zone project
 * 
 * @author (Your Name)
 * @version (The Date)
 */
import java.util.Scanner;
public class TargetZone
{
    public static void main(String[] args)
    {
        //Initialize and declare variables
        String target = "within";
        Scanner in = new Scanner(System.in);
        
        //Prompt user for input
        
        
        //Calculate heart rate target zone min and max
        
        
        //Determine if heart rate after exercise is between the min and max
        
        //If the heart rate is below, change the value of target to "below".
       
       
       //If the heart rate is above, change the value of target to "above".
        
        
        //Print two output statements
        //The first stating the heart rate target zone
        
        
        //The second stating if the heart rate after exercise  was within, above or below
        //the target zone. The variable "target" will have a value of within, above or below
        
         
    } //end main
}//end class TargetZone 


How do I even do this assignment?

Thanks,
Disruption

Hi Junky,

Here is what I have so far:

PHP Code:

import java.util.Scanner;
public class TargetZone
{
   public static void main(String [] args)
   {
       Scanner in = new Scanner(System.in);
       int age;
        
       
       //User input
       System.out.println("Determine your target Heart Rate Zone for Cardiovascular Excercise (50% - 85%");
       System.out.println();
       System.out.println("Enter your age: ");
       age = in.nextInt(); 
       
       //Heart Rate Target Zone Min and Max
       String mhr;
       mhr = (220 - age );
       System.out.println("Maximum Heart Rate:" + age + " bmp ");
       
    }
} 


String mhr;
mhr = (220 - age );
System.out.println("Maximum Heart Rate:" + age + " bmp ")

I am having troubles parsing the string so I can use it in the equation to determine that string mhr.

I'll try it this way. I'm trying to convert an integer (int age) into a way of usage into the equation listed above (mhr = 220 - age). Upon doing that, it gives me errors such as incompatible types. How can I use the age into my string "mhr"?

Would you mind giving me a hint in regards to this?

32ad0099f0502610f412ab0ba2d32364.jpg

That's the error and I'm not understanding.

Age is an Int and the result of (220 - age) should result in an int.

MHR is a string.

So wouldn't that mean that I am trying to get an end result of an integer?

I dare say you'll do yourself and others much good if you simply take some decent book (like Horstmann's "Core Java 2") and try to learn basics of Java - you'll need only first part of the book. The way you are trying - to learn by experiments - is painful enough... Even with people of such great patience like Junky.

I know that you perhaps want your assignment to be done instead of being told to read some stupid book. But if you have any reason to learn - you'll need it, please believe.

Originally Posted by Junky

I have no idea what you are trying to do but you certainly cannot assign an int value to a String variable. Either mhr should be an int or you need to convert the result of (220 - age) to a String representation. Search the API to help you.

Placing MHR as an Int solved this. Thank you for your help Junky.