View Compilation Error

53934_0_7971.cpp: In function `int main()':
53934_0_7971.cpp:8: error: `scanf' undeclared (first use this function)
53934_0_7971.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
53934_0_7971.cpp:38: error: `printf' undeclared (first use this function)