Compilare: user.cpp: In function ‘void ReadInput()’: user.cpp:30:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ user.cpp:32:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x; scanf("%d", &x); ^ user.cpp: In function ‘void ProcessOperations()’: user.cpp:39:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int type, a, b, k; scanf("%d%d%d%d", &type, &a, &b, &k); ^