View Compilation Error

464179_0_0_12244.cpp: In function `int main(int, char**)':
464179_0_0_12244.cpp:6: error: `_int64' undeclared (first use this function)
464179_0_0_12244.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
464179_0_0_12244.cpp:6: error: expected `;' before "a"
464179_0_0_12244.cpp:7: error: `a' undeclared (first use this function)
464179_0_0_12244.cpp:7: error: `b' undeclared (first use this function)