Compilare: user.cpp: In function ‘int main()’: user.cpp:220:9: warning: unused variable ‘arie1’ [-Wunused-variable] int arie1=0,arie2=1; ^ user.cpp:220:17: warning: unused variable ‘arie2’ [-Wunused-variable] int arie1=0,arie2=1; ^ user.cpp:92:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arie.in","r",stdin); ^ user.cpp:93:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arie.out","w",stdout); ^ user.cpp:97:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:100:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&v1[i].x,&v1[i].y); ^ user.cpp:103:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m); ^ user.cpp:106:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&v2[i].x,&v2[i].y); ^ user.cpp:201:12: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[poz]=aux; ^