[Examples] added examples

.gitignore

@@ -2,3 +2,4 @@
 .cache
 build
 *.al
+!examples/*.al

examples/fibonacci_sequence.al

@@ -0,0 +1,15 @@
+fn fib(n: number): number {
+    if n == 0.0 || n == 1.0 {
+        return n;
+    }
+
+    return fib(n - 1.0) + fib(n - 2.0);
+}
+
+fn main(): void {
+    var i: number = 0.0;
+    while i < 20.0 {
+        print(fib(i));
+        i = i + 1.0;
+    }
+}

examples/prime_numbers.al

@@ -0,0 +1,45 @@
+fn divides(n: number, divisor: number): number {
+    var i: number = 1.0;
+    while !(i > n) {
+        let d: number = divisor * i;
+
+        if d == n {
+            return 1.0;
+        }
+
+        i = i + 1.0;
+    }
+
+    return 0.0;
+}
+
+fn isPrime(x: number): number {
+    if x == 0.0 || x == 1.0 {
+        return 0.0;
+    }
+
+    var i: number = 2.0;
+    while !(i > x / 2.0) {
+        if divides(x, i) {
+            return 0.0;
+        }
+
+        i = i + 1.0;
+    }
+
+    return 1.0;
+}
+
+fn main(): void {
+    var n: number = 1.0;
+    var cnt: number = 0.0;
+
+    while cnt < 10.0 {
+        if isPrime(n) {
+            print(n);
+            cnt = cnt + 1.0;
+        }
+
+        n = n + 1.0;
+    }
+}