add test files

2012-02-27 21:55:57 +04:00
parent 645a3a9f2f
commit c21ea8aa86
240 changed files with 16998 additions and 0 deletions
@@ -0,0 +1,23 @@
+// Return null if str does not hold a number
+fun myParseInt(str : String) : Int? {
+    try{
+        return parseInt(str)
+    } catch (e: NumberFormatException) {
+        println("One of argument isn't Int")
+    }
+    return null
+}
+
+fun main(args : Array<String>) {
+    if (args.size < 2) {
+        print("No number supplied");
+    } else {
+        val x = myParseInt(args[0])
+        val y = myParseInt(args[1])
+
+        // We cannot say 'x * y' now because they may hold nulls
+        if (x != null && y != null) {
+            print(x * y) // Now we can
+        }
+    }
+}