This program illustrates the equal_range() member function for sets, which returns a pair of iterators pointing at the upper and lower bounds of its argument in the calling set of values. Press Enter to continue ... Here are the values in our set: 2 4 6 8 10 The lower bound of 0 is 2. The upper bound of 0 is 2. The lower bound of 2 is 2. The upper bound of 2 is 4. The lower bound of 5 is 6. The upper bound of 5 is 6. The lower bound of 6 is 6. The upper bound of 6 is 8. The lower bound of 10 is 10. The upper bound of 10 is at the end of the range. The lower bound of 12 is at the end of the range. The upper bound of 12 is at the end of the range. Press Enter to continue ...