C program to Design a lexical analyzer for given language
LOGIC: 1. Read the input Expression 2. Check whether input is alphabet or digits then store it as identifier 3. If the input is is operator store it as symbol 4. Check the input…
Implement the lexical analyzer using JLex, flex or other lexical analyzer generating tools
LOGIC: Read the input string. Check whether the string is identifier/ keyword /symbol by using the rules of identifier and keywords using LEX ToolPROCEDURE: Go to terminal .Open vi editor ,Lex lex.l ,…
C program to implement Recursive Descent Parser of a given grammer
#include #include char input[10]; int i=0,error=0; void E(); void T(); void Eprime(); void Tprime(); void F(); void main() { clrscr(); printf("Enter an arithmetic expression :n"); gets(input); E(); if(strlen(input)==i&&error==0) printf("nAccepted..!!!"); else…
C program to implement simple code generator
C program to implement simple code generator
C program for constructing of LL (1) parsing
LOGIC:Read the input string. Using predictive parsing table parse the given input using stack .If stack [i] matches with token input string pop the token else shift it repeat the…
C program to Design LALR Bottom up Parser
LOGIC: Read the input string. Push the input symbol with its state symbols in to the stack by referring lookaheads We perform shift and reduce actions to parse the grammar.…
C program to recognize strings under ‘a*’, ‘a*b+’, ‘abb’
LOGIC: By using transition diagram we verify input of the state. If the state recognize the given pattern rule. Then print string is accepted under a*/ a*b+/ abb. Else print string not accepted. PROGRAM:…
C program to test whether a given identifier is valid or not
LOGIC: Read the given input string.Check the initial character of the string is numerical or any special character except ‘_’ then print it is not a valid identifier.Otherwise print it…
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