Compilare: user.cpp: In function ‘void citeste()’: user.cpp:22:63: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(!s.empty() && x > s.top() && s.size() + n - i > m) ^ user.cpp:14:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i%i\n", &n, &m); ^ user.cpp:15:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%c", &x); ^ user.cpp:20:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%c", &x); ^