#include <stl.h> #include <iostream.h> int numbers[10] = { 0, 0, 1, 1, 2, 2, 2, 2, 3, 3 }; int main () { pair <int*, int*> range; range = equal_range (numbers, numbers + 10, 2); cout << "2 can be inserted from before index " << (range.first - numbers) << " to before index " << (range.second - numbers) << endl; return 0; }