View Compilation Error

263217_0_16657.cpp: In function `int main()':
263217_0_16657.cpp:4: error: `__int64' undeclared (first use this function)
263217_0_16657.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
263217_0_16657.cpp:4: error: expected `;' before "f0"
263217_0_16657.cpp:5: error: `scanf' undeclared (first use this function)
263217_0_16657.cpp:5: error: `EOF' undeclared (first use this function)
263217_0_16657.cpp:16: error: `f0' undeclared (first use this function)
263217_0_16657.cpp:16: error: `f1' undeclared (first use this function)
263217_0_16657.cpp:20: error: `ff' undeclared (first use this function)
263217_0_16657.cpp:24: error: `printf' undeclared (first use this function)