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ass4_10006.tar
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ass4_10006.tar
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ass4_10006/ass4_12CS10006.c 000644 001750 001750 00000000473 12403361417 015076 0 ustar 00ankit ankit 000000 000000 #include<stdio.h>
extern FILE* yyin;
extern FILE* yyout;
extern int yylex();
int main(int argc,char *argv[])
{
yyin=fopen("ass4_12CS10006_test.c","r");
yyout=fopen("ass4_12CS10006_result.c","w");
int rtn;
rtn=yyparse();
if(rtn==0) printf("Parsed Successfully..\n");
fclose(yyin);
fclose(yyout);
return 0;
}
ass4_10006/ass4_12CS10006_test.c 000644 001750 001750 00000002413 12403362041 016123 0 ustar 00ankit ankit 000000 000000 /* Compliler Laboratory Assignment 4
Test file to test Parser it parses input from this ass3_12CS10006_test.c
/* // and it generates syntex error if parsing is not possible
created by : Ankit Kumar Gupta
*/
// function to test
//this test file checks all the functionality that tiny C supports
static int a=9;
extern int b=3;
void quicksort(int i,int j,int k); // a simple function declaration quick sort algorithm
int main(){ // function starts
int x[20],size,j;
float f=0.0=0=.0=7.; // to check const_float
// char c='d','hkhk'; // to check const_char
int i=0,j=6=6768=57; // check const_int
printf("Enter size of the array: "); // check string literal functionality
scanf("%d",&size); //Punctuators and identifiers
printf("Enter %d elements: ",size);
for(i=0;i<size;i++)
if(4>0)
scanf("%d",&x[i]);
else
printf("djkf");
quicksort(x,0,size-1);
printf("Sorted elements: ");
for(i=0;i<size;i++)
printf(" %d",x[i]);
return 0;
}
inline void fun(int z)
{
const signed int c=3;
if(f==g)
d='3';
double hg=4.3434=57.67e345=-546.67E4;
do
{
int a=9;
}while(z);
switch(c)
{
case 0:
break;
}
}
#define syntex error // this is a syntex error
ass4_10006/Makefile 000644 001750 001750 00000000633 12403361655 014403 0 ustar 00ankit ankit 000000 000000 a.out: ass4_12CS10006.o y.tab.o lex.yy.o
cc ass4_12CS10006.o y.tab.o lex.yy.o -lfl
y.tab.o: y.tab.c
cc -c y.tab.c
y.tab.c: ass4_12CS10006.y
yacc -dtv ass4_12CS10006.y
lex.yy.o: lex.yy.c y.tab.o
cc -c lex.yy.c
lex.yy.c: ass4_12CS10006.l
flex ass4_12CS10006.l
ass4_12CS10006.o: ass4_12CS10006.c
cc -c ass4_12CS10006.c
clean:
rm lex.yy.c lex.yy.o a.out y.tab.o y.tab.c ass4_12CS10006.o y.tab.h y.output
ass4_10006/ 000755 001750 001750 00000000000 12403362041 012727 5 ustar 00ankit ankit 000000 000000 ass4_10006/ass4_12CS10006.l 000644 001750 001750 00000017452 12403361475 015120 0 ustar 00ankit ankit 000000 000000 %{
#include"y.tab.h"
int no_lines=1;
static void comment();
%}
nondigit [a-zA-Z]
nz_digit [1-9]
digit [0-9]
identifier {nondigit}({nondigit}|{digit})*
int_const {digit}|({nz_digit}{digit}*)
escape-sequence [\']|[\"]|[\?]|[\\]|[\a]|[\b]|[\f]|[\n]|[\r]|[\t]|[\v]
cescape-sequence [\"]|[\?]|[\\]|[\a]|[\b]|[\f]|[\n]|[\r]|[\t]|[\v]
c-char escape-sequence|[^\'\\\n]
c-char-sequence {c-char}+
character-constant \'{c-char-sequence}\'
enumeration-constant {identifier}
digit-sequence {digit}+
sign [+-]
exponent-part [eE]{sign}{digit-sequence}|[eE]{digit-sequence}
fractional_const ({digit-sequence}\.{digit-sequence})|({digit-sequence}\.)|(\.{digit-sequence})
floating-const ({fractional_const})|({fractional_const}{exponent-part})|({digit-sequence}{exponent-part})
sescape-sequence [\']|[\?]|[\\]|[\a]|[\b]|[\f]|[\n]|[\r]|[\t]|[\v]
s_char {sescape-sequence}|[^\"\\\n]
s-char-sequence {s_char}+
string-literal [\"][\"]|([\"]{s-char-sequence}[\"])
punctuator1 "["|"+"|"/"|"?"|"="|","|"]"|"("|"{"|"}"|"."|">"|"*"|"+"|"-"|"~"|"!"|"--"
punctuator2 "%"|"<<"|">>"|"<"|">"|"<="|">="|":"|";"|"..."|"*="|"="|"="|"+="|"="|"<<="
punctuator3 ")"|"&"|"=="|">>="|"="|"&="|"^"|"|"|"^="|"&&"|"||"|"|="|"#"
punctuator {punctuator1}|{punctuator2}|{punctuator3}
single_comment "//".*[\n]
multi_comment "/*"([^*]|\*+[^*/])*\*+"/"
%%
"/*" { comment(); }
[\n] { no_lines++; }
"auto" { fprintf(yyout,"<keyword,%s>\n",yytext); return Auto; }
"break" { fprintf(yyout,"<keyword,%s>\n",yytext); return Break; }
"case" { fprintf(yyout,"<keyword,%s>\n",yytext); return Case; }
"char" { fprintf(yyout,"<keyword,%s>\n",yytext); return Char; }
"const" { fprintf(yyout,"<keyword,%s>\n",yytext); return Const; }
"continue" { fprintf(yyout,"<keyword,%s>\n",yytext); return Continue; }
"default" { fprintf(yyout,"<keyword,%s>\n",yytext); return Default; }
"do" { fprintf(yyout,"<keyword,%s>\n",yytext); return Do; }
"double" { fprintf(yyout,"<keyword,%s>\n",yytext); return Double; }
"else" { fprintf(yyout,"<keyword,%s>\n",yytext); return Else; }
"enum" { fprintf(yyout,"<keyword,%s>\n",yytext); return Enum; }
"extern" { fprintf(yyout,"<keyword,%s>\n",yytext); return Extern; }
"float" { fprintf(yyout,"<keyword,%s>\n",yytext); return Float; }
"for" { fprintf(yyout,"<keyword,%s>\n",yytext); return For; }
"goto" { fprintf(yyout,"<keyword,%s>\n",yytext); return Goto; }
"if" { fprintf(yyout,"<keyword,%s>\n",yytext); return If; }
"inline" { fprintf(yyout,"<keyword,%s>\n",yytext); return Inline; }
"int" { fprintf(yyout,"<keyword,%s>\n",yytext); return Int; }
"long" { fprintf(yyout,"<keyword,%s>\n",yytext); return Long; }
"register" { fprintf(yyout,"<keyword,%s>\n",yytext); return Register; }
"restrict" { fprintf(yyout,"<keyword,%s>\n",yytext); return Restrict; }
"return" { fprintf(yyout,"<keyword,%s>\n",yytext); return Return; }
"short" { fprintf(yyout,"<keyword,%s>\n",yytext); return Short; }
"signed" { fprintf(yyout,"<keyword,%s>\n",yytext); return Signed; }
"sizeof" { fprintf(yyout,"<keyword,%s>\n",yytext); return Sizeof; }
"static" { fprintf(yyout,"<keyword,%s>\n",yytext); return Static; }
"struct" { fprintf(yyout,"<keyword,%s>\n",yytext); return Struct; }
"switch" { fprintf(yyout,"<keyword,%s>\n",yytext); return Switch; }
"typedef" { fprintf(yyout,"<keyword,%s>\n",yytext); return Typedef; }
"union" { fprintf(yyout,"<keyword,%s>\n",yytext); return Union; }
"unsigned" { fprintf(yyout,"<keyword,%s>\n",yytext); return Unsigned; }
"void" { fprintf(yyout,"<keyword,%s>\n",yytext); return Void; }
"volatile" { fprintf(yyout,"<keyword,%s>\n",yytext); return Volatile; }
"while" { fprintf(yyout,"<keyword,%s>\n",yytext); return While; }
"_Bool" { fprintf(yyout,"<keyword,%s>\n",yytext); return Bool; }
"_Complex" { fprintf(yyout,"<keyword,%s>\n",yytext); return Complex; }
"_Imaginary" { fprintf(yyout,"<keyword,%s>\n",yytext); return Imaginary; }
{identifier} { fprintf(yyout,"<identifier,%s>\n",yytext);return identifier;}
{int_const} {fprintf(yyout,"<int_const,%s>\n",yytext);return Int_Constant ;}
{floating-const} {fprintf(yyout,"<floating-const,%s>\n",yytext);return Floating_Const;}
{character-constant} {fprintf(yyout,"<character-constant,%s>\n",yytext);return Character_Constant;}
{string-literal} {fprintf(yyout,"<string-literal,%s>\n",yytext);return string_literal ;}
"<=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P1; }
">=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P2; }
"==" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P3; }
"!=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P4; }
"=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P5; }
"*=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P6; }
"/=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P7; }
"%=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P8; }
"+=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P9; }
"-=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P10; }
"<<=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P11; }
">>=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P12; }
"&=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P13; }
"^=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P14; }
"|=" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P15; }
"&" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P16; }
"*" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P17; }
"+" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P18; }
"-" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P19; }
"~" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P20; }
"!" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P21; }
"[" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P22; }
"]" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P23; }
"(" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P24; }
")" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P25; }
"{" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P26; }
"}" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P27; }
"." { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P28; }
"->" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P29; }
"++" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P30; }
"--" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P31; }
"/" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P32; }
"%" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P33; }
"<<" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P34; }
">>" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P35; }
"<" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P36; }
">" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P37; }
"^" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P38; }
"|" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P39; }
"&&" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P40; }
"||" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P41; }
"?" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P42; }
":" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P43; }
";" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P44; }
"..." { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P45; }
"," { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P46; }
"#" { fprintf(yyout,"<punctuator,'%s'>\n",yytext); return P47; }
{single_comment} { no_lines++;}
[\t' '] {}
<<EOF>> {return 0;}
%%
static void comment(void)
{
int c;
while ((c = input()) != 0){
if(c == '\n')
no_lines++;
if (c == '*')
{
while ((c = input()) == '*');
if (c == '/')
{ return;}
if (c == 0)
break;
}
}
yyerror("unterminated comment");
}
ass4_10006/ass4_12CS10006.y 000644 001750 001750 00000027776 12403360554 015144 0 ustar 00ankit ankit 000000 000000 %{ /* C Declarations and Definitions */
#include <string.h>
#include "y.tab.h"
extern int yylex();
void yyerror(char *s);
extern int no_lines;
%}
%union {
int intval;
float floatval;
char *stringval;
}
%token <intval> Auto
%token <intval> Break
%token <intval> Case
%token <intval> Char
%token <intval> Const
%token <intval> Continue
%token <intval> Default
%token <intval> Do
%token <intval> Double
%token <intval> Else
%token <intval> Enum
%token <intval> Extern
%token <intval> Float
%token <intval> For
%token <intval> Goto
%token <intval> If
%token <intval> Inline
%token <intval> Int
%token <intval> Long
%token <intval> Register
%token <intval> Restrict
%token <intval> Return
%token <intval> Short
%token <intval> Signed
%token <intval> Sizeof
%token <intval> Static
%token <intval> Struct
%token <intval> Switch
%token <intval> Typedef
%token <intval> Union
%token <intval> Unsigned
%token <intval> Void
%token <intval> Volatile
%token <intval> While
%token <intval> Bool
%token <intval> Complex
%token <intval> Imaginary
%token <intval> identifier
%token <intval> Int_Constant
%token <intval> Floating_Const
%token <intval> Enumeration_Constant
%token <intval> Character_Constant
%token <intval> string_literal
%token <intval> P1
%token <intval> P2
%token <intval> P3
%token <intval> P4
%token <intval> P5
%token <intval> P6
%token <intval> P7
%token <intval> P8
%token <intval> P9
%token <intval> P10
%token <intval> P11
%token <intval> P12
%token <intval> P13
%token <intval> P14
%token <intval> P15
%token <intval> P16
%token <intval> P17
%token <intval> P18
%token <intval> P19
%token <intval> P20
%token <intval> P21
%token <intval> P22
%token <intval> P23
%token <intval> P24
%token <intval> P25
%token <intval> P26
%token <intval> P27
%token <intval> P28
%token <intval> P29
%token <intval> P30
%token <intval> P31
%token <intval> P32
%token <intval> P33
%token <intval> P34
%token <intval> P35
%token <intval> P36
%token <intval> P37
%token <intval> P38
%token <intval> P39
%token <intval> P40
%token <intval> P41
%token <intval> P42
%token <intval> P43
%token <intval> P44
%token <intval> P45
%token <intval> P46
%token <intval> P47
%type<intval> primary_expression
%type<intval> postfix_expression
%type<intval> argument_expression_list
%type<intval> unary_expression
%type<intval> unary_operator
%type<intval> cast_expression
%type<intval> multiplicative_expression
%type<intval> additive_expression
%type<intval> relational_expression
%type<intval> equality_expression
%type<intval> AND_expression
%type<intval> exclusive_OR_expression
%type<intval> inclusive_OR_expression
%type<intval> logical_AND_expression
%type<intval> logical_OR_expression
%type<intval> conditional_expression
%type<intval> assignment_expression
%type<intval> assignment_operator
%type<intval> expression
%type<intval> Constant_expression
%type<intval> declaration
%type<intval> declaration_specifiers
%type<intval> init_declarator_list
%type<intval> init_declarator
%type<intval> type_specifier
%type<intval> specifier_qualifier_list
%type<intval> Enum_specifier
%type<intval> Enumerator_list
%type<intval> Enumerator
%type<intval> type_qualifier
%type<intval> function_specifier
%type<intval> declarator
%type<intval> direct_declarator
%type<intval> pointer
%type<intval> type_qualifier_list
%type<intval> parameter_type_list
%type<intval> parameter_list
%type<intval> parameter_declaration
%type<intval> identifier_list
%type<intval> type_name
%type<intval> initializer
%type<intval> initializer_list
%type<intval> designation
%type<intval> designator_list
%type<intval> designator
%type<intval> statement
%type<intval> labeled_statement
%type<intval> compound_statement
%type<intval> block_item_list
%type<intval> block_item
%type<intval> expression_statement
%type<intval> selection_statement
%type<intval> iteration_statement
%type<intval> jump_statement
%type<intval> External_declaration
%type<intval> function_definition
%type<intval> declaration_list
%type<intval> Constant
%type<intval> shift_expression
%type<intval> storage_class_specifier
%expect 1
%start translation_unit
%%
primary_expression:
identifier
|Constant
|string_literal
|P24 expression P25
;
postfix_expression :
primary_expression
|postfix_expression P22 expression P23
|postfix_expression P24 argument_expression_list P25
|postfix_expression P24 P25
|postfix_expression P28 identifier
|postfix_expression P29 identifier
|postfix_expression P30
|postfix_expression P31
|P24 type_name P25 P26 initializer_list P27
|P24 type_name P25 P26 initializer_list P46 P27
;
argument_expression_list :
assignment_expression
|argument_expression_list P46 assignment_expression
;
unary_expression :
postfix_expression
|P30 unary_expression
|P31 unary_expression
|unary_operator cast_expression
|Sizeof unary_expression
|Sizeof P24 type_name P25
;
unary_operator : P16 |P17 |P18 |P19 |P20 |P21
;
cast_expression :
unary_expression
|P24 type_name P25 cast_expression
;
multiplicative_expression :
cast_expression
|multiplicative_expression P17 cast_expression
|multiplicative_expression P32 cast_expression
|multiplicative_expression P33 cast_expression
;
additive_expression :
multiplicative_expression
|additive_expression P18 multiplicative_expression
|additive_expression P19 multiplicative_expression
;
shift_expression :
additive_expression
|shift_expression P34 additive_expression
|shift_expression P35 additive_expression
;
relational_expression :
shift_expression
|relational_expression P36 shift_expression
|relational_expression P37 shift_expression
|relational_expression P1 shift_expression
|relational_expression P2 shift_expression
;
equality_expression :
relational_expression
|equality_expression P3 relational_expression
|equality_expression P4 relational_expression
;
AND_expression :
equality_expression
|AND_expression P16 equality_expression
;
exclusive_OR_expression :
AND_expression
|exclusive_OR_expression P38 AND_expression
;
inclusive_OR_expression:
exclusive_OR_expression
|inclusive_OR_expression P39 exclusive_OR_expression
;
logical_AND_expression :
inclusive_OR_expression
|logical_AND_expression P40 inclusive_OR_expression
;
logical_OR_expression :
logical_AND_expression
|logical_OR_expression P41 logical_AND_expression
;
conditional_expression :
logical_OR_expression
|logical_OR_expression P42 expression P43 conditional_expression
;
assignment_expression :
conditional_expression
|unary_expression assignment_operator assignment_expression
;
assignment_operator : P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | P15
;
expression:
assignment_expression
|expression P46 assignment_expression
;
Constant_expression : conditional_expression
;
Constant:
Int_Constant
|Floating_Const
|Enumeration_Constant
|Character_Constant
;
declaration:
declaration_specifiers init_declarator_list P44
|declaration_specifiers P44
;
declaration_specifiers:
storage_class_specifier declaration_specifiers
|storage_class_specifier
|type_specifier declaration_specifiers
|type_specifier
|type_qualifier declaration_specifiers
|type_qualifier
|function_specifier declaration_specifiers
|function_specifier
;
init_declarator_list:
init_declarator
|init_declarator_list P46 init_declarator
;
init_declarator:
declarator
|declarator P5 initializer
;
storage_class_specifier:
Extern
|Static
|Auto
|Register
;
type_specifier:
Void
|Char
|Short
|Int
|Long
|Float
|Double
|Signed
|Unsigned
|Bool
|Complex
|Imaginary
|Enum_specifier
;
specifier_qualifier_list:
type_specifier specifier_qualifier_list
|type_specifier
|type_qualifier specifier_qualifier_list
|type_qualifier
;
Enum_specifier:
Enum identifier P26 Enumerator_list P27
| Enum P26 Enumerator_list P27
|Enum identifier P26 Enumerator_list P46 P27
|Enum P26 Enumerator_list P46 P27
|Enum identifier
;
Enumerator_list:
Enumerator
|Enumerator_list P46 Enumerator
;
Enumerator:
Enumeration_Constant
|Enumeration_Constant P5 Constant_expression
;
type_qualifier:
Const
|Restrict
|Volatile
;
function_specifier:
Inline
;
declarator:
pointer direct_declarator
|direct_declarator
;
direct_declarator:
identifier
|P24 declarator P25
|direct_declarator P22 type_qualifier_list assignment_expression P23
|direct_declarator P22 type_qualifier_list P23
|direct_declarator P22 assignment_expression P23
|direct_declarator P22 P23
|direct_declarator P22 Static type_qualifier_list assignment_expression P23
|direct_declarator P22 Static assignment_expression P23
|direct_declarator P22 type_qualifier_list Static assignment_expression P23
|direct_declarator P22 type_qualifier_list P17 P23
|direct_declarator P22 P17 P23
|direct_declarator P24 parameter_type_list P25
|direct_declarator P24 identifier_list P25
|direct_declarator P24 P25
;
pointer:
P17 type_qualifier_list
|P17
|P17 type_qualifier_list pointer
|P17 pointer
;
type_qualifier_list:
type_qualifier
|type_qualifier_list type_qualifier
;
parameter_type_list:
parameter_list
|parameter_list P46 P45
;
parameter_list:
parameter_declaration
|parameter_list P46 parameter_declaration
;
parameter_declaration:
declaration_specifiers declarator
|declaration_specifiers
;
identifier_list:
identifier
|identifier_list P46 identifier
;
type_name:
specifier_qualifier_list
;
initializer:
assignment_expression
|P26 initializer_list P27
|P26 initializer_list P46 P27
;
initializer_list:
designation initializer
| initializer
|initializer_list P46 initializer
|initializer_list P46 designation initializer
;
designation:
designator_list P5
;
designator_list:
designator
|designator_list designator
;
designator:
P22 Constant_expression P23
|P28 identifier
;
statement:
labeled_statement
|compound_statement
|expression_statement
|selection_statement
|iteration_statement
|jump_statement
;
labeled_statement:
identifier P43 statement
|Case Constant_expression P43 statement
|Default P43 statement
;
compound_statement:
P26 block_item_list P27
|P26 P27
;
block_item_list:
block_item
|block_item_list block_item
;
block_item:
declaration
|statement
;
expression_statement:
expression P44
| P44
;
selection_statement:
If P24 expression P25 statement
|If P24 expression P25 statement Else statement
|Switch P24 expression P25 statement
;
iteration_statement:
While P24 expression P25 statement
|Do statement While P24 expression P25 P44
|For P24 expression P44 expression P44 expression P25 statement
|For P24 expression P44 expression P44 P25 statement
|For P24 expression P44 P44 expression P25 statement
|For P24 expression P44 P44 P25 statement
|For P24 P44 expression P44 expression P25 statement
|For P24 P44 expression P44 P25 statement
|For P24 P44 P44 expression P25 statement
|For P24 P44 P44 P25 statement
|For P24 declaration expression P44 expression P25 statement
|For P24 declaration expression P44 P25 statement
|For P24 declaration P44 expression P25 statement
|For P24 declaration P44 P25 statement
;
jump_statement:
Goto identifier P44
|Continue P44
|Break P44
|Return expression P44
|Return P44
;
translation_unit:
External_declaration
|translation_unit External_declaration
;
External_declaration:
function_definition
|declaration
;
function_definition:
declaration_specifiers declarator declaration_list compound_statement
|declaration_specifiers declarator compound_statement
;
declaration_list:
declaration
|declaration_list declaration
;
%%
void yyerror(char *s) {
printf("%s at line no.:%d\n",s,no_lines);
}