Compiling and running first program!

program.c

@@ -1,5 +1,4 @@
 
-
 #include <stdint.h>
 typedef int8_t   S8;
 typedef int16_t  S16;
@@ -14,21 +13,21 @@ typedef S16      B16;
 typedef S32      B32;
 typedef S64      B64;
 typedef U64      SizeU;
-typedef S64      SizeI;
+typedef S64      SizeS;
 typedef float    F32;
 typedef double   F64;
 
-struct String{
+typedef struct String{
   U8 *str;
   S64 len;
-};
-
+}String;
+#define LIT(x) (String){.str=(U8 *)x, .len=sizeof(x)-1}
   
 struct Lex_Stream{
   U8 *stream;
   U8 *end;
 };
-static Void main(){
+int main(){
   String string_to_lex = LIT("Identifier 2425525 Not_Number");
   for(S64 i = 0;(i<string_to_lex.len);(i+=1)){
     (string_to_lex.str[0]=64);