Compilare: user.cpp: In function ‘void task2()’: user.cpp:42:12: warning: unused variable ‘len’ [-Wunused-variable] int i, len; ^ user.cpp: In function ‘void read()’: user.cpp:12:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("risc2.in", "r", stdin); ^ user.cpp:13:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &r, &n); ^ user.cpp:16:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i].h); ^ user.cpp: In function ‘void write()’: user.cpp:81:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("risc2.out", "w", stdout); ^ user.cpp: In function ‘void task2()’: user.cpp:43:9: warning: ‘ascn’ may be used uninitialized in this function [-Wmaybe-uninitialized] int ascn, ascp, desc; ^ user.cpp:70:30: warning: ‘ascp’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol = n - max(ascn, ascp + desc); ^