Can someone please help me to solve this problem?

Question

It's about making a program to print the average of each one of 20 students in a class consists of 3 groups, the main problem I have is that I can't repeat the operation 3 times for each group after I find the average, help pls.
This is my problem
https://code.sololearn.com/c6431K5TFk2V/?ref=app

Answer 1

You need set j=1 again after first group avg completed. So put j=1 after inner while loop completion...