View Compilation Error

725799_0_0_7901.cpp: In function `int main()':
725799_0_0_7901.cpp:4: error: `scanf' undeclared (first use this function)
725799_0_0_7901.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
725799_0_0_7901.cpp:6: error: `printf' undeclared (first use this function)