Some updates to Schala source files

source_files/schala/does_scope_work.schala

@@ -1,12 +1,11 @@
-
-const c = 10
+let c = 10
 
 fn add(a, b) {
-  const c = a + b
+  let c = a + b
   c
 }
 
-var b = 20
+let mut b = 20
 
 println(add(1,2))
 println(c + b)

source_files/schala/first_program.schala

@@ -1,10 +1,15 @@
 fn main() {
-  const a = 10
-  const b = 20
+  let a = 10
+  let b = 20
   a + b
 }
 
-//foo
+//this is a one-line comment
+
+/* this is
+a multiline
+comment
+*/
 
 print(main())
 

source_files/schala/test.schala

@@ -6,7 +6,7 @@ fn sua(x): Int {
 }
 
 
-//const a = getline()
+//let a = getline()
 
 /*
 if a == "true" {