Question

Why the result is 0. The correct result should be 2 but it is 0. Why?

File Edit using std:istring int numVowels(string str) Exited with status int str len str. length); int i int count for (i=0; î <str-len; i++) /s Convert the character to 1 /s If the character is atready in Lower case, tolower) will return temp tolower(strli]): />If the character is any of these five letters ,a", 'e', 'i', 'o', 'u count++ /- Return the count value that contain the number of vowels. / return count int main() string str "vOWELs" int numorvoe1s = 0; /. Invoke numVowe ls by passing str as argument to ge t the number of Vowels present in the string. / cout st Nunber of Voue s in the string i str" are e numorVovels < endl: return 8;

Answer 1

#include <iostream>
#include <string>
using namespace std;

int numVowels(string str)
{
int str_len = str.length();
int i = 0, count = 0;
for(i=0; i<str_len; i++)
{
if(str[i] == 'a' || str[i] == 'e' || str[i] == 'i' || str[i] == 'o' || str[i] == 'u' || str[i] == 'A' || str[i] == 'E' || str[i] == 'I' || str[i] == 'O' || str[i] == 'U')
count++;
}
return count;
}

int main()
{
string str = "vOWELs";
int numOfVowels = numVowels(str);
cout << "Number of Vowels in the string \"" << str << "\" are " << numOfVowels << endl;
return 0;
}

OUTPUT:

Number of Vowels in the string "vOWELs" are 2