FUNCTION DECLARATION 

<PROGRAM> → <TYPES> id ( <PARAM_LIST> ) ; <PROGRAM> 

<PARAM_LIST> → <DT> <ID> <PARAM> | <VOID> | E 

<PARAM> → , <DT> <ID> <PARAM> | E 

<ID> → id | E 

<TYPES> → <DT> | <VOID> 

<VOID> → void 

GLOBAL IDENTIFIERS 

<PROGRAM> → <IDENTIFIER> <PROGRAM> 

MAIN FUNCTION

<PROGRAM> →   <OPT_VOID> main ( <OPT_VOID> ) { <STMT_LIST> } <OPT_FUNCTION> 

<OPT_VOID> → <VOID> | E 

<STMT_LIST> → <STMT> <STMT_LIST> | E 

<STMT> → <IDENTIFIER> 

<IDENTIFIER> → <DT> id <OPT_VAL> <ID_LIST> 

<ID_LIST> → , id <OPT_VAL> <ID_LIST> | ; 

<OPT_VAL> → = <EXP> | E 

INPUT OUTPUT STATEMENT 

<STMT> → cin >> id ; 

<STMT> → cout << <OUTPUT> <OPT_OUTPUT> 

<OPT_OUTPUT> → << <OUTPUT> <OPT_OUTPUT> | ; 

<OUTPUT> → <EXP> | <STRING_CONSTANT> 

<STMT> → id = <EXP> ;

MATHEMATICAL EVALUATION AND OTHER EXPRESSION 

<EXP> → <TERM> <E_LIST>  

<E_LIST> → + <TERM> <E_LIST>  

<E_LIST> → - <TERM> <E_LIST>  

<E_LIST> → E 

<TERM> → <P> <T_LIST> 

<T_LIST> → * <P> <T_LIST> 

<T_LIST> → / <P> <T_LIST> 

<T_LIST> → E 

<P> → ( <EXP> ) 

<P> → id |id <INCDEC_OP> | <NUMERIC_CONSTANT> |      <CHARACTER_CONSTANT> | id (< ID_2 > 

<INCDEC_OP> →  ++ | --

TO HANDLE BLOCKS OF CODE AND RESOLVE SCOPE

<STMT> → <L_BRACE> <STMT_LIST> <R_BRACE> 

<L_BRACE> → { 

<R_BRACE> → } 

 IF CONDITION 

<STMT> → if ( <CONDITION> ) <STMT_LIST> <OPTIONAL_ELSE> 

<OPTIONAL_ELSE> → ELSE <STMT_LIST> | E 

 CONDITIONS WITH LOGICAL OPERATOR

<CONDITION> → ( <CONDITION_ST> ) <LOGICAL> 

<CONDITION> → <CONDITION_ST> 

<CONDITION_ST> → <OUTPUT> <ROP> <OUTPUT> 

<LOGICAL> → <LOG_OP> ( <CONDITION_ST> ) <LOGICAL> 

<LOGICAL> → E

FOR STATEMENT

<STMT> → for ( id = <EXP> ; <CONDITION> ; <INC_DEC_FOR> ) <STMT_LIST> 

<INC_DEC_FOR> → id = <EXP> | id <INC_DEC> 

 WHILE STATEMENT

<STMT> → while ( <CONDITION> ) { <STMT_LIST> } 

FUNCTION CALLS 

<STMT> → id ( <ID_2> ); 

<ID_2>  →   id <MORE_ID> | <NUMERIC_CONSTANT> <MORE_ID> |  <CHARACTER_CONSTANT> <MORE_ID> | E 

<MORE_ID> →  ,   id <MORE_ID> | , <NUMERIC_CONSTANT> <MORE_ID> | , <CHARACTER_CONSTANT> <MORE_ID> | E

FUNCTION DEFINITION

<OPT_FUNCTION> →  <TYPES> id ( <PARAM_LIST_2> ) { <STMT_LIST> } <OPT_FUNCTION> | E 

<PARAM_LIST_2> → <DT> id <PARAM_2> | <VOID> | E 

<PARAM_2> → , <DT> id <PARAM_2> | E