some cosmetic changes to fix warnings and forLoop

runtime/Makefile

@@ -1,9 +1,9 @@
 CC := g++
 CFLAGS := -Wall
 CFLAGS += -std=c++11
-CFLAGS += -fno-rtti
-CFLAGS += -fno-exceptions
-CFLAGS += -Os
+#CFLAGS += -fno-rtti
+#CFLAGS += -fno-exceptions
+#CFLAGS += -Os
 LFLAGS := 
 
 all: binaries

runtime/main.cpp

@@ -5,7 +5,7 @@
 */
 #include "runtime.h"
 
-struct subroutine *callStack=nullptr;
+subroutine *callStack=nullptr;
 
 subroutine::subroutine(unsigned int r)
 {
@@ -17,7 +17,7 @@ unsigned int subroutine::close()
 {
 	if (callStack==nullptr) return STACK_UNDERFLOW_ERROR;
 	unsigned int r=callStack->ret;
-	struct subroutine *l=callStack->called;
+	subroutine *l=callStack->called;
 	delete callStack;
 	callStack=l;
 	return r;

runtime/runtime.h

@@ -20,7 +20,7 @@ enum STATES:unsigned int
 
 class subroutine
 {
-    struct subroutine *called;
+    subroutine *called;
     unsigned int ret;
 
 public:
@@ -30,7 +30,7 @@ public:
     {}
 };
 
-extern struct subroutine *callStack;
+extern subroutine *callStack;
 
 /* function prototype */
 unsigned int run();