View Compilation Error

898611_0_0_6538.cpp: In function `int main()':
898611_0_0_6538.cpp:4: error: `scanf' undeclared (first use this function)
898611_0_0_6538.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
898611_0_0_6538.cpp:7: error: `printf' undeclared (first use this function)