%{
#include <stdio.h>
int vowel_count = 0;
%}
 
%%
[a-zA-Z]+     {
                int len = strlen(yytext);
                if (len % 2 != 0) {
                    int mid = len / 2;
                    if (yytext[mid] == 'a' || yytext[mid] == 'e' || yytext[mid] == 'i' || yytext[mid] == 'o' || yytext[mid] == 'u' ||
                        yytext[mid] == 'A' || yytext[mid] == 'E' || yytext[mid] == 'I' || yytext[mid] == 'O' || yytext[mid] == 'U') {
                        printf("%s\n", yytext);
                        vowel_count++;
                    }
                }
              }
.|\n           ;
%%
 
int main() {
    yylex();
    printf("Total words with middle character as vowel: %d\n", vowel_count);
    return 0;
}
 

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