View Compilation Error

411059_0_0_16145.cpp: In function `int main()':
411059_0_0_16145.cpp:5: error: `_int64' undeclared (first use this function)
411059_0_0_16145.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
411059_0_0_16145.cpp:5: error: expected `;' before "n"
411059_0_0_16145.cpp:6: error: `n' undeclared (first use this function)
411059_0_0_16145.cpp:8: error: expected `;' before "c"
411059_0_0_16145.cpp:9: error: `c' undeclared (first use this function)