I'm not getting my expected output in FLEX Windows LEX compiler

My Code:

%{
    #include<stdio.h>
    int vowelcount=0;
    int consocount=0;
%}

%%

"a"|"e"|"i"|"o"|"u"|"A"|"E"|"I"|"O"|"U" {vowelcount++;}

[a-zA-z] {consocount++;}

%%

int yywrap(){}

main()
{
    printf("Enter a String:\n");
    yylex();
    printf("The number of Vowels in the string are: %d",vowelcount);
    printf("The number of Consonants in the string are: %d",consocount);
    return 0;
}

I'm only getting the access to enter a string. After that it's not printing my expected output of counting number of vowels and consonants. I think that I've written the code correct, but I have no clue why it's not working. Can you please take a look into it.