C++ นับข้อความ

string c("what a wonderful world");
int word = 1, l;
l = c.length();
for (int i = 0; i<l; ++i)
{
if (c[i] == ' ')
{
word = word + 1;
}
}
cout << endl << c << endl;
cout <<endl<< word << endl;
cout << endl;