C++ Input a list of people's heights (in inches) from the user (terminated by a 0) and find the average height. The average should be displayed with a single value after the decimal, always showing. Do not allow the user to input a value less than 0 and use a while loop for input validation. What happens to your program if the first height input is 0? If this causes a problem, fix it! Can you please help WITHOUT using boolean values? Only up to chapter 5 in C++ From Control Structures through Objects.