Compilare: user.cpp: In function ‘void update(int, int, int, int, int, int)’: user.cpp:75:30: warning: unused variable ‘sumST’ [-Wunused-variable] int mij = (st + dr) / 2, sumST, sumDR; ^ user.cpp:75:37: warning: unused variable ‘sumDR’ [-Wunused-variable] int mij = (st + dr) / 2, sumST, sumDR; ^ user.cpp: In function ‘int main()’: user.cpp:88:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hotel.in", "r", stdin); ^ user.cpp:89:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &tasks); ^ user.cpp:95:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &c); ^ user.cpp:98:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &inc, &lg); ^