Compilare: user.cpp: In function ‘int main()’: user.cpp:7:11: warning: unused variable ‘i’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:7:13: warning: unused variable ‘cnt’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:7:17: warning: unused variable ‘l’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:7:19: warning: unused variable ‘j’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:7:21: warning: unused variable ‘k’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:7:23: warning: unused variable ‘min’ [-Wunused-variable] int n,i,cnt,l,j,k,min; ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.in","r",stdin); ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.out","w",stdout); ^ user.cpp:10:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^