Compilare: user.cpp: In function ‘void ProcessOperations()’: user.cpp:112:20: warning: unused variable ‘x’ [-Wunused-variable] for(int i = 0, x = 0; i < N; i++) { ^ user.cpp:108:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N; scanf("%d", &N); ^ user.cpp:113:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^