I created a new project by clicking on "Create a new project", choosing Files and C/C++ source
I copy-pasted the following program:
int a, b, sum;
cin >> a;
cin >> b;
sum = a + b;
cout << sum << endl;
I clicked on Run and received
sh: 1: path/to/the/file: Permission denied
Process returned 126 (0x7E) execution time : 0.002 s
Press ENTER to continue.