View Compilation Error

702300_0_0_4816.cpp: In function `int main()':
702300_0_0_4816.cpp:1: error: `scanf' undeclared (first use this function)
702300_0_0_4816.cpp:1: error: (Each undeclared identifier is reported only once for each function it appears in.)
702300_0_0_4816.cpp:1: error: `printf' undeclared (first use this function)