I've tried array implementing for creating and operating queue operation but having ended with some query can somebody helped me

Question

Here is the link of that tried code
https://code.sololearn.com/cp6sXKKrq1Is/?ref=app

Answer 1

You have to pass the referance of the variable to the scanf because without it scanf will not know where to store the input data and will result in generation of error.

Like this👇
scanf("%d",&a)

Answer 2

~ swim ~ I've fixed some errors with structure and other tons of error how to solve the remaining problem in the code