View Compilation Error

0_0_8245722_1899.cpp: In function `std::istream& operator>>(std::istream&, Rect&)':
0_0_8245722_1899.cpp:11: error: no match for 'operator>>' in 'in >> r->Rect::Top'
0_0_8245722_1899.cpp:10: note: candidates are: std::istream& operator>>(std::istream&, Rect&)
0_0_8245722_1899.cpp: In function `int main()':
0_0_8245722_1899.cpp:31: error: `cin' undeclared (first use this function)
0_0_8245722_1899.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8245722_1899.cpp:61: error: `cout' undeclared (first use this function)
0_0_8245722_1899.cpp:67: error: `endl' undeclared (first use this function)