View Compilation Error

226946_0_2600.cpp: In function `int main()':
226946_0_2600.cpp:6: error: `scanf' undeclared (first use this function)
226946_0_2600.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
226946_0_2600.cpp:10: error: `printf' undeclared (first use this function)