Arithmetic Operations -Java

Question

 class Example {
    public static void main(String args[]){
        System.out.println(12+8/5%4*(5-4/5)+4*5);
    }
 }

Why the output is 37? Can anyone explain? I'm a beginner in java

Ditto Eran. We can't really explain your misconception and help you understand why it is what it is, unless we know what you expect and why. — MutantOctopus, Mar 08 '18 at 07:31
I don't get 37 in my calculations .i got 12+8 together and 5%4 together .What's the fault in it? — Nelumi, Mar 08 '18 at 07:40
Those are elementary maths. You may not even need to know Java to know how to calcuate the result — phuclv, Mar 08 '18 at 09:40
Nelumi, check my post, there I explain in detail every detail — Héctor M., Mar 08 '18 at 14:46
I'm voting to close this question as off-topic because this is a question about maths, not about programming. — Joe C, Mar 09 '18 at 07:07

score 1 · Answer 1 · edited Mar 08 '18 at 14:40

1

Check the precedence of the operators in java:

12+8/5%4*(5-4/5)+4*5
12+8/5%4*(5-0)+4*5
12+8/5%4*5+4*5
12+1%4*5+4*5
12+1*5+4*5
12+5+20
37

edited Mar 08 '18 at 14:40

John Kugelman

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answered Mar 08 '18 at 07:26

user3134614

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score 0 · Answer 2 · edited Mar 08 '18 at 14:42

You have: 12+8/5%4*(5-4/5)+4*5

In the post of user3134614

12+8/5%4*(5-4/5)+4*5
12+8/5%4*(5-0)
12+8/5%4*5+4*5
12+1%4*5+4*5
12+1*5+4*5
12+5+20
37

You have the basic operators

+ add two numbers
- subtract two numbers
* Multiply two numbers
/ divide two numbers

And these, a little more advanced

% gets the remainder of two numbers, that is, that divides them and obtains the remainder, if the number is even, then the rest is zero, and if it is odd, it is another number

For example 4%4 would be 4 divided by 4 results in 2 and 2 + 2 = 4, there is no remainder, on the other hand 5%4 = 1, because 2 + 2 = 4 and over 1 of 5
The parentheses () separate a mathematical expression and return it as a single quantity, example

5 - (3-2) * 2 is equivalent to 5 - (1) * 2 = 5 - 2 = 3

Then

12+8/5%4*(5-4/5)+4*5
12+8/5%4*(5-0) is 12+8/5%4*(5 - (4/5) = 0.8, but converted to integer is 0, then 5 - 0 = 5)
12+8/5%4*5+4*5 is 12+ (8/5 = 1.6, but to integer is 1) %4*5+4*5
12+1%4*5+4*5 is 12+ (1%4 = 1 (1 is different of 4 then result is 1)) *5+4*5
12+1*5+4*5 is 12 + (1*5 = 5) + (4*5 = 20)
12+5+20 and 12 + 5 + 20 = 37
37

Arithmetic Operations -Java

2 Answers2