View Compilation Error

287114_0_4827.cpp: In function `int main()':
287114_0_4827.cpp:5: error: `_int64' undeclared (first use this function)
287114_0_4827.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
287114_0_4827.cpp:5: error: expected `;' before "i"
287114_0_4827.cpp:6: error: `f' undeclared (first use this function)
287114_0_4827.cpp:7: error: `i' undeclared (first use this function)
287114_0_4827.cpp:11: error: `n' undeclared (first use this function)