Compilare: user.cpp: In function ‘void det_moves()’: user.cpp:117:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, l, minv = v[pos + 1].h; ^ user.cpp:117:15: warning: unused variable ‘l’ [-Wunused-variable] int i, j, l, minv = v[pos + 1].h; ^ user.cpp: In function ‘void task2()’: user.cpp:134:9: warning: unused variable ‘i’ [-Wunused-variable] int i, len; ^ user.cpp:134:12: warning: unused variable ‘len’ [-Wunused-variable] int i, len; ^ user.cpp: In function ‘void read()’: user.cpp:13:36: 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:14:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &r, &n); ^ user.cpp:17:29: 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:155:38: 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); ^