为什么我的作业出现逻辑错误？

I'm a junior student in IT. I am facing a problem with the output of the program. The idea of the program is that I should use functions to read an array of 10 elements, then get the average of the elements, then get the the max and min. I've got the max and min right but the average is showing weird stuff. Please check the code and tell me what should I do or help me in some way or another.I'm a junior student in IT. I am facing a probl