Compilare: user.cpp: In function ‘int main()’: user.cpp:13:11: warning: unused variable ‘j’ [-Wunused-variable] int val,t,j,total,n,best,comb,i,q,nr,minim,temp; ^ user.cpp:13:21: warning: unused variable ‘best’ [-Wunused-variable] int val,t,j,total,n,best,comb,i,q,nr,minim,temp; ^ user.cpp:13:44: warning: unused variable ‘temp’ [-Wunused-variable] int val,t,j,total,n,best,comb,i,q,nr,minim,temp; ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind2.in","r",stdin); ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind2.out","w",stdout); ^ user.cpp:15:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:19:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:20:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;++i) scanf("%d",&v[i]); ^