Compilare: user.cpp: In function ‘int main()’: user.cpp:13:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("roata.in","r",stdin); ^ user.cpp:14:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("roata.out","w",stdout); ^ user.cpp:16:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ",&n,&p); ^ user.cpp:21:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&x); ^ user.cpp:50:20: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] var=v[poz]; ^ user.cpp:17:15: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] int s=0,pp=0,last,f=0,m=0,var=0; ^