Compilare: user.cpp: In function ‘bool factor(char*)’: user.cpp:188:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] rez = stk[pozlit[s[crChar]]]; ^ user.cpp: In function ‘void readExp()’: user.cpp:42:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(a, 229, f); ^ user.cpp:44:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(b, 229, f); ^ user.cpp: In function ‘void solve()’: user.cpp:265:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &n); ^ user.cpp: In function ‘bool factor(char*)’: user.cpp:188:35: warning: array subscript is above array bounds [-Warray-bounds] rez = stk[pozlit[s[crChar]]]; ^