first activity of session2

validators/activity_1.ak

@@ -0,0 +1,49 @@
+// - Activity 001 - Create the substraction (-) function and test it 
+
+fn sub (x:Int , y:Int) -> Int{
+    x-y
+}
+
+test sub_test(){
+    sub(5,2) ==3
+}
+
+fn sum(x,y) -> Int {
+    x+y
+}
+
+
+//- Activity 002 - Create the multiplication (*) function and test it 
+
+fn mul(x:Int, y :Int) -> Int{
+    x*y
+}
+
+test mul_test(){
+    mul(5,2) == 10
+}
+
+// - Activity 003 - Create the division (/) function and test it
+
+
+fn divd(x,y) {
+    x/y
+}
+
+test divd_test(){
+    divd(10,5) == 2
+}
+
+//- Activity 004 - Modify the main function that uses the sum function and the new functions created in the previous practices and test it
+
+fn main() {
+    let result = sum (2,3)
+    let result = sub(result,1)
+    let result = mul(result,2)
+    let result = divd (result,2)
+    result
+}
+
+test main_test(){
+    main()==4
+}