Compilare: user.cpp: In function ‘void calc(char)’: user.cpp:15:29: warning: integer overflow in expression [-Woverflow] int linie = (1<<31) - 1; ~~~~~~~~^~~ user.cpp:20:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol += comb[nr][nrb]; ^ user.cpp:23:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(int i = mask[poz]; i < n; ++ i){ ^ user.cpp:26:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] mask[++poz] = i; ^