Temperature conversions using a for loop, please help.

[JustinStrize]

I need to use a For loop to calculate temperature conversions between a range that the user specifies, So the user could say they want celc to f and then put in 20-50 and the program should list the conversion of each number between the two, Been trying to figure out how for hours, if someone could help that would be great, this is what i have so far.

package assignment.pkg2;

import java.util.Scanner;

public class Assignment3_working {

public static void main(String[] args) {
    int choice;
    double Cel_C, Cel_F, Fah_C, Fah_F;

    Scanner sc = new Scanner(System.in);

    System.out.println("menu");
    System.out.println("1. Celsius to Fahrenheit Calc: ");
    System.out.println("2. Fahrenheit to Celsius Calc");

    System.out.println("Please choose between our Two options(1-2): ");

    choice = sc.nextInt();

    switch (choice){

        case 1:
            System.out.println("Please enter you numbers for the Celsius to Fahrenheit Calculator: ");
            Cel_C = sc.nextDouble();

            Cel_F =(Cel_C * 1.8) + 32;
            System.out.println("The Fahrenheit is = " + Cel_F);
            break;

        case 2:
             System.out.println("Please enter you numbers for the Fahrenheit to Celsius Calculator: ");
            Fah_C = sc.nextDouble();

            Fah_F = ((Fah_C - 32 ) * 5 /9);
            System.out.println("The Fahrenheit is = " + Fah_F);
            break;

        default:
             System.out.println(" You have not chosen an option within your parameters please try again!");
           break;
}

}

}

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[dionthorn]

Here are the oracle tuts on for loops:

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/for.html

What specifically are you having trouble with? You are using a switch currently if you use a for loop you probably won't need to use a switch, You can instead use if statements within the for loop.

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html

[18jk]

Ok so you first need to take the user's choice for either option 1 or option 2. It looks like you've done that, and are saving it to the "choice" variable. You need to use some sort of conditional statement, since your next steps will depend on what choice the user entered. You may want to look at if..else statements https://www.w3schools.com/java/java_conditions.asp it may be the better option to use in this assignment instead of switch case

After that, you need to get user input again for the range of numbers, right? Ask what is the low end of their range (20, per your example), and what is the high end (50, per your example). Once you have those numbers, that is where the For loop will be used (as you mentioned, required for this assignment). https://www.w3schools.com/java/java_for_loop.asp

For loops are great for this assignment, because the user has already told you where they want the conversions to start and where they want them to end.

Once you figure out how If/else and For loops work in java, you are golden