How to write this grammar rule as C code?

Question

I'm creating a parser by hand for a class in my undergrad studies, and I need to convert this first grammar rule into C code. I've gotten the last three, as shown below

1. Declarations -> Var_decl || Declarations Var_decl
2. Var_decl -> TYPE varList SEMI
3. varList -> var || varList COMMA var
4. var -> IDENT || IDENT RBRAK INT_LIT LBRAK

int parse_var(){
  struct token t = peek();

  if(t.tokenNum == IDENT)
  { 
    consume(IDENT);
    t = peek();

    //Check if the IDENT has [INT_LIT] after it, making it a single dimension array
    if(t.tokenNum == RBRAK) 
    {
        consume(RBRAK);
        t = peek();
        //Check if the [ has an INT_LIT] after it
        if(t.tokenNum == INT_LIT)
        {
            consume(INT_LIT);
            t = peek();
            //check for the ] 
            if(t.tokenNum == LBRAK)
            {
                consume(LBRAK);
                return 0;
            }//error handling for missing ']'
            fprintf(stderr, "Parsing error: Expected a ']' after the Integer Literal on line %d", t.lineNum);
        }//error handling for missing 'INT_LIT'
        fprintf(stderr, "Parsing error: Expected an Integer Literal after '[' on line %d", t.lineNum);
        return -1;
    }
    return 0;
}//Error handling for missing Identifier 
fprintf(stderr, "Parsing error: Expected an Identifier near text %s on line %d", t.lexeme, t.lineNum);
return -1;
}


/* Helper: consumes a comma separated list of variables
 * ex: x, y, z[5]
 * returns: -1 upon failure and 0 upon success
 */
int parse_varList()
{
    int result = parse_var();

    struct token t = peek();

    if(t.tokenNum == COMMA)
    {
        consume(COMMA);
        result = parse_varList();
    }

    return result; 
}
int parse_varDeclarations(){
  int result = parse_type();

  if(result == 0) {
    result = parse_varList();
    consume(SEMI);
   }

return result;
}

Any guidance would be awesome as it's been difficult finding this answer online. I think I could do something similar to how I've done the varList function, but I'm not sure if I'm even on the right track.