View Compilation Error

802618_0_0_10648.cpp: In function `int main()':
802618_0_0_10648.cpp:1: error: `scanf' undeclared (first use this function)
802618_0_0_10648.cpp:1: error: (Each undeclared identifier is reported only once for each function it appears in.)
802618_0_0_10648.cpp:1: error: `printf' undeclared (first use this function)