[Minibasic] Add sample programs and syntax generator

Author: kostis

minibasic/programs/checkscopes.mba

@@ -0,0 +1,8 @@
+var a : int
+let a = 42
+begin
+  var a : int
+  let a = 17
+  print a
+end
+print a

minibasic/programs/count.mba

@@ -0,0 +1,6 @@
+let x = 0
+for 42 do   ' count up to 42
+  begin
+    let x = x + 1
+    print x
+  end

minibasic/programs/countodd.mba

@@ -0,0 +1,7 @@
+let x = 0
+for 42 do   ' count up to 42
+  begin
+    let x = x + 1
+    if x % 2 then
+      print x
+  end

minibasic/programs/doublefor.mba

@@ -0,0 +1,12 @@
+let a = 1
+for 10 do
+begin
+   let b = 0
+   for a do
+   begin
+     let a = 1000000
+     let b = b + 1
+     print a * 1000 + b
+   end
+   let a = 1
+end

minibasic/programs/duplicatevar.mba

@@ -0,0 +1,4 @@
+var a : int
+var a : bool
+let a = 42
+print a

minibasic/programs/error.mba

@@ -0,0 +1,5 @@
+let x = 0
+for 42 do 17 ' count up to 42
+    let x = x + 1
+    print x
+  end

minibasic/programs/fib.mba

@@ -0,0 +1,9 @@
+let b = 1
+print 1
+for 10 do
+begin
+  let c = a + b
+  print c
+  let a = b
+  let b = c
+end

minibasic/programs/gcd.mba

@@ -0,0 +1,14 @@
+let a = 42174217
+let b = 17421742
+
+for 100 do
+  if a then
+    if b then begin
+      let x = 0
+      for a - b do let x = 1
+      if x then let a = a % b
+      let x = 0
+      for b - a do let x = 1
+      if x then let b = b % a
+    end
+print a + b

minibasic/programs/hello.mba

@@ -0,0 +1 @@
+print 42

minibasic/programs/helloscopes.mba

@@ -0,0 +1,3 @@
+var a : int
+let a = 42
+print a