loop changes

Author: avi

src/examples/loops.ts

@@ -5,7 +5,8 @@ let z = 0;
 while(i<10){
     console.log(i);
     i = i + 1;
-    z =i;
+    let z = i;
+    console.log(z)
 }
 
 let j=0;

src/syntax.ts

@@ -63,6 +63,14 @@ export class SymbolTable{
         this.table[varName] = type
     }
 
+    lookupInHigherScope(varName: string){
+        if(this.parent == null){
+            return "__bt";
+        }else{
+            return this.lookup(varName);
+        }
+    }
+
     lookup(varName: string){
 
         if(this.table.hasOwnProperty(varName)){