Can call the compiler from command line with argument

ccodegen.cpp

@@ -96,6 +96,7 @@ gen_expr(Ast_Expr *ast){
     CASE(INDEX, Index){
       gen("(");
       gen_expr(node->expr);
+
       gen("[");
       gen_expr(node->index);
       gen("]");
@@ -426,7 +427,6 @@ compile_string(String filecontent, String filename = "default_name"_s){
   pctx->resolving_package = result;
   F64 parse_end = os_time();
 
-
   gen(R"==(
 #include <stdint.h>
 #include <stdio.h>
@@ -448,6 +448,11 @@ typedef float    F32;
 typedef double   F64;
 typedef S32     Bool;
 
+typedef struct Slice{
+  S64 len;
+  void *data;
+}Slice;
+
 typedef struct String{
   U8 *str;
   S64 len;