Compilare: user.cpp: In function ‘int main()’: user.cpp:22:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("reuniune.in","r",stdin); ^ user.cpp:24:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld",&d1.x1,&d1.y1,&d1.x2,&d1.y2); ^ user.cpp:25:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld",&d2.x1,&d2.y1,&d2.x2,&d2.y2); ^ user.cpp:26:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld",&d3.x1,&d3.y1,&d3.x2,&d3.y2); ^