Compilare: user.cpp: In function ‘int main()’: user.cpp:18:26: warning: unused variable ‘piv’ [-Wunused-variable] int n,mn=INT_MAX,poz,piv; ^ 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("order2.in","r",stdin); ^ user.cpp:17:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("order2.out","w",stdout); ^ user.cpp:29:15: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<poz+1<<"\n"; ^