View Compilation Error

375278_0_0_10699.cpp: In function `int main()':
375278_0_0_10699.cpp:4: error: `scanf' undeclared (first use this function)
375278_0_0_10699.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
375278_0_0_10699.cpp:16: error: `printf' undeclared (first use this function)