Compilare: user.cpp: In function ‘void cit()’: user.cpp:15:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.in","r",stdin); ^ user.cpp:16:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.out","w",stdout); ^ user.cpp:17:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&cer,&n,&k); ^ user.cpp:19:102: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf%lf%lf%lf%lf",&tr[i].a.x,&tr[i].a.y,&tr[i].b.x,&tr[i].b.y,&tr[i].c.x,&tr[i].c.y); ^ user.cpp: In function ‘double apm(int)’: user.cpp:202:17: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[b[q][j]]=1; ^