%{
#include <stdio.h>
%}
 
%%
 
[0-9]+                    { printf("Number: %s\n", yytext); }
 
#[^\n]*                   { printf("Comment: %s\n", yytext); }
 
\"[^\"]*\"                { printf("Text String: %s\n", yytext); }
 
[A-Za-z_][A-Za-z0-9_]*    { printf("Identifier/Command: %s\n", yytext); }
 
[ \t\n,]+                 { /* ignore whitespace and commas */ }
 
.                         { printf("Unknown Token: %s\n", yytext); }
 
%%
 
int main(void)
{
    printf("Enter your input sequence:\n");
    yylex();
    return 0;
}
 
 

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