how to grab each character from a string
// An easier way to extract each character would be: string s = "abcde"; for (int i=0; i<s.size(); i++) { cout << s[i]; } // To test if a particular character is an integer, you would do this: //test if s[i] is an int from 0-9 if (s[i] <= '9' && s[i] >= '0') { return true; }