View Compilation Error

472676_0_0_15857.cpp: In function `int main()':
472676_0_0_15857.cpp:4: error: `scanf' undeclared (first use this function)
472676_0_0_15857.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
472676_0_0_15857.cpp:4: error: `EOF' undeclared (first use this function)
472676_0_0_15857.cpp:5: error: `printf' undeclared (first use this function)