View Compilation Error

98279_0_9551.cpp: In function `int main()':
98279_0_9551.cpp:5: error: `scanf' undeclared (first use this function)
98279_0_9551.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
98279_0_9551.cpp:5: error: `EOF' undeclared (first use this function)
98279_0_9551.cpp:7: error: `printf' undeclared (first use this function)