Math logic with variables and loop

Question

I want to solve problem about my math homework (I'm middle-schooler).
I have 2 variables : 'm' and 'n', I must find the values of each variable that will make m-n==4, Example : m = 6, n = 2, m-n = 6-2 = 4
Note : the value must be between 1 and 10
I keep failing on making a program that solve this problem, can you give me an example??
Using JAVA

Answer 1

Show us your failed attempt, post or link it here, then someone will give you a hint!

Answer 2

Hey Fajar, is there user input required? maybe for the value of <m> and <n> ? or the 4 is user input ?

Answer 3

@Ipang no, no user input is required.
And @Paul @HonFu [#GoGetThatBugChamp!] I got 2 and -2 as the result, that's not what I expected neither what it should be to solve the math problem.
My Code somehow looks like this :

https://code.sololearn.com/cLlUD1uMhRzo/#java

Answer 4

@Fajar okay ...
Since the condition is m - n = 4, first check which is greater between <m> and <n>, if <n> is greater than <m> we need to swap <m> and <n>, to prevent negative result from subtraction.

<m> be at least equal to 4, because by then <n> will be zero; <m>(4) - <n>(0) = 4. Also see that <m> will be at least equal to 4 + <n>.

I wrote this method, but I think it may not be what you want, it displays all possible values of <m> and <n> where their subtraction results as 4. The method requires an argument <value>, in your case it is 4. Hope this gives you an idea to solve the case 👍

private static void task(int value)
{
for (int m = value, n = 0; m <= 10; m++, n++)
{
System.out.println(m + " and " + n);
}
System.out.println();
}

(Edit)
I think I don't clearly understand what the program was supposed to do. Maybe you can provide more examples with different number?

Answer 5

Hint: instead of trying to find m and n at the same time. Pick a value for m and check if the value of n satisfying n-m == 4 is in your valid range.