Compilare: user.cpp: In function ‘int main()’: user.cpp:12:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blas.in", "r", stdin); ^ user.cpp:13:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blas.out", "w", stdout); ^ user.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:19:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:37:38: warning: array subscript is above array bounds [-Warray-bounds] d[(keep - 3) % 5] = mlc[i]; ^ user.cpp:38:42: warning: array subscript is above array bounds [-Warray-bounds] d[(keep - 2) % 5] = mlc[i + 1]; ^ user.cpp:39:42: warning: array subscript is above array bounds [-Warray-bounds] d[(keep - 1) % 5] = mlc[i + 2]; ^ user.cpp:40:36: warning: array subscript is above array bounds [-Warray-bounds] d[keep % 5] = mlc[i + 3]; ^