View Compilation Error

792801_0_0_3684.cpp: In function `int main()':
792801_0_0_3684.cpp:1: error: `scanf' undeclared (first use this function)
792801_0_0_3684.cpp:1: error: (Each undeclared identifier is reported only once for each function it appears in.)
792801_0_0_3684.cpp:1: error: `printf' undeclared (first use this function)