Need to check if this is well done

[silver sparrow]

I wanna know if this exercise i did is like this or if i did wrong; the exercise is
"A person purchased a product to pay in 20 months. The first month he paid €10, the second €20, the third €40 and so on. Make a program to determine how much you must pay each month and the total amount you will pay after 20 months."

My code:

public class Ejercicio3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        int a=5;
        int i=1;
        int suma=0;
        
        while (i<=20) {
            a=a*2;
            System.out.println("Mes "+i+": "+a+" euros");
            suma+=a;
            i++;
        }
        System.out.println("El total es: "+suma+" euros");
    }
}

[little otter]

Hey, @silver sparrow!
Please remember to /close this post once your question has been answered!

[desert mesa]

hllo

[silver sparrow]

hi

[desert mesa]

arrent there input and output

[silver sparrow]

input and output? what that means? 😅

[desert mesa]

like output is System.out.println("hello");

[silver sparrow]

oh

so i think i need to output

[desert mesa]

is that the full quetion

what is the exercise quetion full

[silver sparrow]

yah the exercise question full is the one i give on the top

"A person purchased a product to pay in 20 months. The first month he paid €10, the second €20, the third €40 and so on. Make a program to determine how much you must pay each month and the total amount you will pay after 20 months."

[desert mesa]

there is actually a way

u can do

arthermitic progression

or u can just use loops and stuff too

[silver sparrow]

My code:

public class Ejercicio3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        int a=5;
        int i=1;
        int suma=0;
        
        while (i<=20) {
            a=a*2;
            System.out.println("Mes "+i+": "+a+" euros");
            suma+=a;
            i++;
        }
        System.out.println("El total es: "+suma+" euros");
    }
}```

i gave this on the top 😅 just needed to know if this is right

[desert mesa]

its not many things wrong

the while loop will stop when its equal to 20

u need 20 also right ??

i<=20 this is true when i == 20 so it wills top

stoop

[silver sparrow]

20 months ya

but the 20th month is paid too no?

for that i put i<=20; you have to pay the month 1, the month 2, month 3...

[desert mesa]

i<20;

use like this then

sorry

ur is correct

[silver sparrow]

yah if i put i=0; then while i<20. I did i=1 so i can show the month too

[desert mesa]

its correct

[silver sparrow]

wow ty, and nice!:D

[desert mesa]

i didnt did anythign lol

[silver sparrow]

the confirmation is what i needed so ya, u did 😛 haha ; tyy, so now i close this and give ur heart 🙂