https://www.tuj.ac.jp/about/faculty-staff/peter-morris
IP is one of Peter’s legal focus areas and he has lectured on copyright law and other IP issues at various forums, including UTEM Law School in Malaysia. After obtaining his bar license in 2019, Peter opened his own law firm in Irvine, California.
https://cis.temple.edu/~wangp/1057-PC/Lecture/Ch06.htm
Now we can see that since scanf may get many values (one for each format specifier in the format string), all arguments passed to it must be pointers. The return value of scanf is the number of items it successfully converts and stores.