Compilare: user.cpp: In function ‘int main()’: user.cpp:14:13: warning: unused variable ‘start’ [-Wunused-variable] int n,i,start,j,prec,sz,poz = inf; ^ user.cpp:14:21: warning: variable ‘prec’ set but not used [-Wunused-but-set-variable] int n,i,start,j,prec,sz,poz = inf; ^ user.cpp:28:11: warning: unused variable ‘nr’ [-Wunused-variable] int l,nr; ^ user.cpp:15:33: 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:16:35: 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:18:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^