View Compilation Error

980357_0_0_4755.cpp: In function `int main()':
980357_0_0_4755.cpp:5: error: `_int64' undeclared (first use this function)
980357_0_0_4755.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
980357_0_0_4755.cpp:5: error: expected `;' before "a"
980357_0_0_4755.cpp:10: error: `a' undeclared (first use this function)
980357_0_0_4755.cpp:10: error: `b' undeclared (first use this function)