Compilare: user.cpp: In function ‘int main()’: user.cpp:14:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.in","r",stdin); ^ user.cpp:15:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.out","w",stdout); ^ user.cpp:17:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ user.cpp:11:29: warning: ‘right’ may be used uninitialized in this function [-Wmaybe-uninitialized] elements=elements-(right-left+1); ^ user.cpp:16:23: note: ‘right’ was declared here int n,i,best,left,right,start,sum; ^ user.cpp:11:29: warning: ‘left’ may be used uninitialized in this function [-Wmaybe-uninitialized] elements=elements-(right-left+1); ^ user.cpp:16:18: note: ‘left’ was declared here int n,i,best,left,right,start,sum; ^