Compilare: user.cpp: In function ‘int main()’: user.cpp:19:25: warning: unused variable ‘st’ [-Wunused-variable] int n,i,j,k,min,max,st,dr,val,l; ^ user.cpp:19:28: warning: unused variable ‘dr’ [-Wunused-variable] int n,i,j,k,min,max,st,dr,val,l; ^ user.cpp:19:31: warning: unused variable ‘val’ [-Wunused-variable] int n,i,j,k,min,max,st,dr,val,l; ^ user.cpp:19:35: warning: unused variable ‘l’ [-Wunused-variable] int n,i,j,k,min,max,st,dr,val,l; ^ user.cpp:17:33: 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:18:35: 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:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^