View Compilation Error

35571_0_22952.cpp: In function `int main()':
35571_0_22952.cpp:5: error: `scanf' undeclared (first use this function)
35571_0_22952.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
35571_0_22952.cpp:9: error: `printf' undeclared (first use this function)