Compilare: user.cpp: In function ‘int main()’: user.cpp:5:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cern.in","r",stdin); ^ user.cpp:6:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cern.out","w",stdout); ^ user.cpp:11:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&p); ^ user.cpp:12:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&sens,&timp); ^ user.cpp:89:5: warning: ‘cerc’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(cerc==3&&sens==1) ^ user.cpp:98:25: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] else { poz-=timp; if(poz<0) poz+=360; break; } ^