#include <stdint.h>
#include <stdio.h>
typedef int8_t   S8;
typedef int16_t  S16;
typedef int32_t  S32;
typedef int64_t  S64;
typedef uint8_t  U8;
typedef uint16_t U16;
typedef uint32_t U32;
typedef uint64_t U64;
typedef S8       B8;
typedef S16      B16;
typedef S32      B32;
typedef S64      B64;
typedef U64      SizeU;
typedef S64      SizeS;
typedef float    F32;
typedef double   F64;
typedef S32     Bool;

typedef struct Slice{
  S64 len;
  void *data;
}Slice;

typedef struct String{
  U8 *str;
  S64 len;
}String;
#define LIT(x) (String){.str=(U8 *)x, .len=sizeof(x)-1}

void entry();
int main(){
  entry();
}
  

typedef struct Token{
  U8 kind;
  U8 *str;
  S64 len;
  /*enum Kind{
    Number = 0,
  };*/
}Token;
String kind_name(U8 kind){
  if((kind==0)){
    return LIT("<Number>");
  }
  else{
    return LIT("<Unknown>");
  }
}
Bool is_numeric(U8 c){
  Bool result = ((c>=48)&&(c<=57));
  return result;
}
void entry(){
  String string_to_lex = LIT("Identifier 2425525 Not_Number");
  Slice token_array = (Slice){32, (Token [32]){}};
  S64 token_count = 0;
  Token t;
  for(S64 i = 0;(i<string_to_lex.len);i+=1){
    if(is_numeric((string_to_lex.str[i]))){
      t.kind=0;
      t.str=(&(string_to_lex.str[i]));
      t.len=i;
      for(;is_numeric((string_to_lex.str[i]));){
        i+=1;
      }
      t.len=(i-t.len);
      (((Token *)token_array.data)[(token_count++)])=t;
    }
  }
  for(S64 i = 0;(i<token_count);(i++)){
    Token *tk = (&(((Token *)token_array.data)[i]));
    printf("%.*s", ((S32 )tk->len), tk->str);
  }
}