Compilare: user.cpp: In function ‘int main()’: user.cpp:48:42: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(O.x > v[i].x || O.x == v[i].x && O.y > v[i].y) ^ user.cpp:39:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in","r",stdin); ^ user.cpp:40:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.out","w",stdout); ^ user.cpp:41:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:47:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f%f",&v[i].x,&v[i].y); ^ user.cpp:54:22: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] swap(v[1], v[pos]); ^