public/subjects/java/piscine/IntOperations/README.md

## IntOperations

### Instructions

Create a file `IntOperations.java`.

Write the following functions:

- `addTwoIntegers` that returns the sum of two integers passed as parameter.
- `substractTwoIntegers` that subtracts the second parameter from the first parameter, and returns the result.
- `multiplyTwoIntegers` that returns the multiplication of two integers passed as parameter.
- `divideTwoIntegers` that returns the Euclidian division of two integers passed as parameter. We ignore the divide by 0 case.

### Expected Functions

```java
public class IntOperations {
    public static int addTwoIntegers(int a, int b) {
        // your code here
    }
    public static int subtractTwoIntegers(int a, int b) {
        // your code here
    }
    public static int multiplyTwoIntegers(int a, int b) {
        // your code here
    }
    public static int divideTwoIntegers(int a, int b) {
        // your code here
    }
}
```

### Usage

Here is a possible ExerciseRunner.java to test your function :

```java
public class ExerciseRunner {
    public static void main(String[] args) {
        System.out.println("Add");
        System.out.println(IntOperations.addTwoIntegers(1, 2));
        System.out.println(IntOperations.addTwoIntegers(15, 68));

        System.out.println("Subtract");
        System.out.println(IntOperations.subtractTwoIntegers(4, 1));
        System.out.println(IntOperations.subtractTwoIntegers(10, 23));

        System.out.println("Multiply");
        System.out.println(IntOperations.multiplyTwoIntegers(3, 6));
        System.out.println(IntOperations.multiplyTwoIntegers(12, 11));

        System.out.println("Divide");
        System.out.println(IntOperations.divideTwoIntegers(8, 2));
        System.out.println(IntOperations.divideTwoIntegers(13, 4));
    }
}
```

and its output :

```shell
$ javac *.java -d build
$ java -cp build ExerciseRunner
Add
3
83
Subtract
3
-13
Multiply
18
132
Divide
4
3
$
```

### Notions

[Primitive Links](https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html)  
[Operations](https://docs.oracle.com/javase/tutorial/java/nutsandbolts/op1.html)