Add Even Odd in V (#4089)

Author: Kaamkiya

archive/v/v/even-odd.v

@@ -0,0 +1,22 @@
+module main
+
+import os
+import strconv
+
+fn main() {
+	if os.args.len < 2 {
+		println('Usage: please input a number')
+		exit(1)
+	}
+
+	num := strconv.atoi(os.args[1]) or {
+		println('Usage: please input a number')
+		exit(1)
+	}
+
+	print(match num % 2 {
+		0 { 'Even' }
+		1, -1 { 'Odd' }
+		else { 'Usage: please input a number' }
+	})
+}