View Compilation Error

940530_0_0_4953.cpp: In function `int main()':
940530_0_0_4953.cpp:6: error: `scanf' undeclared (first use this function)
940530_0_0_4953.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
940530_0_0_4953.cpp:9: error: `printf' undeclared (first use this function)