View Compilation Error

56510_0_10665.cpp: In function `int main()':
56510_0_10665.cpp:4: error: `scanf' undeclared (first use this function)
56510_0_10665.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
56510_0_10665.cpp:6: error: `printf' undeclared (first use this function)