string.find_last_of(substring)
#include <iostream> using std::cout; using std::endl; #include <string> using std::string; int main() { string string1( "This is a test string!"); int location; location = string1.find_last_of( "is" ); cout << "\n\n(find_last_of) found '" << string1[ location ] << " at: " << location; return 0; } /* (find_last_of) found 'i at: 18 */