C++ primer(第五版） 练习 5.9 个人code

#include <iostream>
#include <string>

using std::cout;
using std::cin;
using std::endl;
using std::string;

int main()
{
string text;
unsigned cnt = 0;
while (cin >> text)
{
for (auto &a : text)
{
if (a == 'a' || a == 'o' || a == 'e' || a == 'i' || a == 'u')
++cnt;
}

}
cout << cnt << endl;

return 0;
}