View Compilation Error

120509_0_2607.cpp: In function `int main()':
120509_0_2607.cpp:12: error: `scanf' undeclared (first use this function)
120509_0_2607.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
120509_0_2607.cpp:48: error: `printf' undeclared (first use this function)