Compilare: user.cpp: In function ‘void citire()’: user.cpp:29:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %d" , &n , &m , &k ) ; ^ user.cpp:30:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %d %d" , &l1 , &c1 , &l2 , &c2 ) ; ^ user.cpp:33:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d" , &v[i].x , &v[i].y ) ; ^ user.cpp: In function ‘int main()’: user.cpp:107:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "poarta.in" , "r" , stdin ) ; ^ user.cpp:108:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "poarta.out" , "w" , stdout ) ; ^