View Compilation Error

98271_0_29171.cpp: In function `int main()':
98271_0_29171.cpp:5: error: `scanf' undeclared (first use this function)
98271_0_29171.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
98271_0_29171.cpp:5: error: `EOF' undeclared (first use this function)
98271_0_29171.cpp:7: error: `printf' undeclared (first use this function)