View Compilation Error

206075_0_21154.cpp: In function `int main()':
206075_0_21154.cpp:5: error: `_int64' undeclared (first use this function)
206075_0_21154.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
206075_0_21154.cpp:5: error: expected `;' before "n"
206075_0_21154.cpp:6: error: `n' undeclared (first use this function)
206075_0_21154.cpp:9: error: `i' undeclared (first use this function)