Дан текст из цифр! - C++

bool isVowel(const int c){if (c=='a' || c=='e' || c=='i' || c=='o' || c=='u') return true; return false;}
bool isConsonant(const int c){return !isVowel(c);}
 
int main()
{
    char str[]="test string";
    cout<< (count_if(str,str+strlen(str),isVowel) > count_if(str,str+strlen(str),isConsonant) ? "vowel" : "consonant");
}