Having an issue with YACC grammar - compilation

Question

The code I wrote seems to not be able to detect a function. I tried many edits but nothing seems to be working.
program : function-decl | decl | function-def
;
decl : kind var-list SEMICOLON
{
tok_type = "variable";
}
;
kind : KW_INT {integer = true; floatType = false;}
| KW_FLOAT {integer = false; floatType = true;}
;
var-list : ID varmany
{
tok_type = "variable";
t.check_token (tok_type, $1, line_no, bodyCheck, parameter);
}
;
varmany : /*empty*/ | varmany COMMA ID
{
tok_type = "variable";
t.check_token (tok_type, $3, line_no, bodyCheck, parameter );
}
;
function-decl : kind ID LPAR kind RPAR SEMICOLON
{
current_func = $2;
declaration = true;
parameter= false;
tok_type= "function";
t.check_token (tok_type, current_func, line_no, bodyCheck, parameter );
current_func ="";
}
;
function-def : kind ID LPAR kind ID RPAR body
{
current_func = $2;
paramName = $5;
declaration = false;
parameter= false;
tok_type= "function";
t.check_token (tok_type, current_func, line_no, bodyCheck, parameter );
tok_type = "variable";
parameter=true;
t.check_token(tok_type, paramName, line_no, bodyCheck, parameter);
current_func ="";
}
;
For example, for text input :
int main (int DUMMY) {
int x,y,z;
float p;
int main (int x){x = y;}
p = -z * (x/345+y*1.0) + - 300;
p = -z * (x/345+y*1.0) + -300;
while (p>=-(x+y)*3.45/6-z)
z = z + 3;
}
I get these error messages:
Local int variable y declared in line 3.
Local int variable z declared in line 3.
Local int variable x declared in line 3.
Local float variable p declared in line 5.
Local int variable main declared in line 6.
syntax error on line 6, matched: (
Local int variable x declared in line 6.
syntax error on line 6, matched: )

Answer 1

Your function_decl rule insists on exactly one parameter and does not allow for its name.