Compilare: user.cpp: In function ‘int main()’: user.cpp:13:44: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] for (int i=2;i<=n;++i) scanf("%d",b); ^ user.cpp:6:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("magicsequence.in","r",stdin); ^ user.cpp:7:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("magicsequence.out","w",stdout); ^ user.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:12:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&a); ^ user.cpp:13:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i=2;i<=n;++i) scanf("%d",b); ^ user.cpp:14:38: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf(b > a ? "YES\n":"NO\n"); ^