View Compilation Error

544953_0_0_1607.cpp: In function `void Output()':
544953_0_0_1607.cpp:38: error: `printf' undeclared (first use this function)
544953_0_0_1607.cpp:38: error: (Each undeclared identifier is reported only once for each function it appears in.)
544953_0_0_1607.cpp: In function `int main(int, char**)':
544953_0_0_1607.cpp:100: error: `scanf' undeclared (first use this function)
544953_0_0_1607.cpp:100: error: `EOF' undeclared (first use this function)
544953_0_0_1607.cpp:105: error: `printf' undeclared (first use this function)