View Compilation Error

38127_0_26653.cpp: In function `int main()':
38127_0_26653.cpp:5: error: `scanf' undeclared (first use this function)
38127_0_26653.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
38127_0_26653.cpp:7: error: `EOF' undeclared (first use this function)
38127_0_26653.cpp:9: error: `printf' undeclared (first use this function)
38127_0_26653.cpp:11: error: `getchar' undeclared (first use this function)