View Compilation Error

185597_0_6681.cpp: In function `int main()':
185597_0_6681.cpp:8: error: `scanf' undeclared (first use this function)
185597_0_6681.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
185597_0_6681.cpp:8: error: `EOF' undeclared (first use this function)
185597_0_6681.cpp:20: error: `printf' undeclared (first use this function)