%{
#include<stdio.h>
#include<string.h>
int i = 0;  // Counter for the number of words
%}
 
/* Rules Section */
%%
 
[a-zA-Z0-9]+    { i++; }  /* Rule for counting words composed of alphanumeric characters */
[\n]            { printf("Number of words: %d\n", i); i = 0; }  /* Print count when a newline is encountered */
[ \t]+          { /* Ignore spaces and tabs */ }
 
%%
 
int yywrap(void) {
    return 1;  // Return 1 to indicate the end of the input
}
 
int main() {
    // The function that starts the lexical analysis
    printf("Enter words, and press Enter to get the word count:\n");
    yylex();  // Start lexical analysis
    return 0;
}
 

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