View Compilation Error

239706_0_1008.cpp: In function `int main()':
239706_0_1008.cpp:5: error: `_int64' undeclared (first use this function)
239706_0_1008.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
239706_0_1008.cpp:5: error: expected `;' before "a"
239706_0_1008.cpp:9: error: `a' undeclared (first use this function)
239706_0_1008.cpp:9: error: `b' undeclared (first use this function)
239706_0_1008.cpp:10: error: `s' undeclared (first use this function)