View Compilation Error

0_0_3937971_26364.cpp: In function `bool scan_d(int&)':
0_0_3937971_26364.cpp:4: error: `getchar' undeclared (first use this function)
0_0_3937971_26364.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3937971_26364.cpp:5: error: `EOF' undeclared (first use this function)