c - Is trailing newline necessary in fgets?

Question

When I search using keywords of 'fgets' and 'newline', there are many posts regarding how to remove the trailing newline character (and such removal appears to be a burden). Yet it seems there is few explaination on how that newline is necessary for fgets to include. Also in C++, the 'std::getline' and 'std::istream:getline' methods will not keep the newline character. So is there a reason for it?

Answer 1

Here is satisfying (IMHO) explanation:
http://www.cplusplus.com/reference/cstdio/fgets/

Especially:

A newline character makes fgets stop reading, but it is considered a valid character by the function and included in the string copied to str.