View Compilation Error

924658_0_0_21100.cpp: In function `int main()':
924658_0_0_21100.cpp:6: error: `scanf' undeclared (first use this function)
924658_0_0_21100.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
924658_0_0_21100.cpp:14: error: `printf' undeclared (first use this function)