I tried to sort an array in descending order in C++. So, I used
std::sort(x, x + len, greater<int>());
and Xcode shows debugging message
Use of undeclared identifier 'greater'; did you mean 'std::greater'?
Fix in operations.h
I accidentally clicked the fix button and after that when I try to run this project, a warning message of
The document “operations.h” could not be saved. You don’t have permission.
To view or change permissions, select the item in the Finder and choose File > Get Info.
comes up.
How do I get rid of this message and undo the changes made?
Please help me it is so annoying.....