Compilare: user.cpp: In function ‘int main()’: user.cpp:77:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!ok[c]) c = fgetc(fi); ^ user.cpp:112:17: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(i && v[i][j] == 'A' || v[i][j] == '.') i--; ~~^~~~~~~~~~~~~~~~~ user.cpp:74:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^