using percentages?

[shroomiin]

Hello everyone. I am trying to write a program that reads a percent discount and then deducts that from a total price. i was just wondering how do i assign percentages to a variable?

what i am doing is

print "please enter percent discount";
percent discount++

then be able to use that variable (which is a percentage) later on in the code. thanks

[Fubarable]

This isn't really programming but basic math and as such, you may do well to read up on percents, say on Wikipedia. If you reduce a price by 12%, you would subtract from the price the price * 12/100 which is the same as multiplying the price by 0.88 (which equals ((100 - 12) / 100) ).

[shroomiin]

thanks! with your advice i was able to come up with a pretty good code. my only problem is i need to have the ability to input a number with a thousandths place into the baseprice variable, such as $305.68 opposed to just plain old $305. care to lead me i the right direction? this is what i have for my code. works well minus that small problem.

import java.util.Scanner;
public class project2 {
	public static void main(String[] args) {
		
		Scanner input = new Scanner(System.in);
		
		int baseprice;
		int discountrate;
		double discountamt;
		double price2;
		int tax;
		double taxamt;
		double finalprice;
		
		System.out.print("Please enter the base price of the vehicle: $");
		baseprice = input.nextInt();
		
		System.out.print("Please enter the rate of the discount: %");
		discountrate = input.nextInt();
		
		System.out.print("Please enter the rate of tax: %");
		tax = input.nextInt();
			
		discountamt = baseprice * discountrate/100;
		
		price2 = baseprice - discountamt;
		
		taxamt = price2 * tax/100;
		
		finalprice = price2 * tax/100 + price2;
		
		if (finalprice >= 30000)
			System.out.printf("Valued Customer Bonus!\n");
		
		System.out.printf("The amount of discount is: $%.2f\n", discountamt);
		System.out.printf("The amount of tax is: $%.2f\n", taxamt);
		System.out.printf("The final price of the car is: $%.2f\n", finalprice);
		
	}

}

[Fubarable]

If you need a double input then read in a double -- input.nextDouble() -- and have a double variable accept this input:

double myDouble = input.nextDouble();

Please look up the API for the java.util.Scanner class if you need to know more.