The list of all natural numbers less than 10 that are multiples of 3 or 5 is 3,5,6,9. The sum of these multiples is 23. Write a C++ program to calculate the sum of all such multiples less than 1,000. If a number is a multiple of both 3 and 5 (e.g. 15) co

The list of all natural numbers less than 10 that are multiples of 3 or 5 is 3,5,6,9. The
sum of these multiples is 23. Write a C++ program to calculate the sum of all such
multiples less than 1,000. If a number is a multiple of both 3 and 5 (e.g. 15) count it only once.