Token list:

Token type: IDENTIFIER
Token:      procedure

Token type: IDENTIFIER
Token:      main

Token type: L_PAREN
Token:      (

Token type: IDENTIFIER
Token:      void

Token type: R_PAREN
Token:      )

Token type: L_BRACE
Token:      {

Token type: IDENTIFIER
Token:      int

Token type: IDENTIFIER
Token:      counter

Token type: SEMICOLON
Token:      ;

Token type: IDENTIFIER
Token:      counter

Token type: ASSIGNMENT_OPERATOR
Token:      =

Token type: INTEGER
Token:      -2

Token type: SEMICOLON
Token:      ;

Token type: IDENTIFIER
Token:      printf

Token type: L_PAREN
Token:      (

Token type: DOUBLE_QUOTE
Token:      "

Token type: STRING
Token:      counter = %d\n

Token type: DOUBLE_QUOTE
Token:      "

Token type: COMMA
Token:      ,

Token type: IDENTIFIER
Token:      counter

Token type: R_PAREN
Token:      )

Token type: SEMICOLON
Token:      ;

Token type: R_BRACE
Token:      }