View Compilation Error

221451_0_31555.cpp: In function `int main()':
221451_0_31555.cpp:6: error: `_int64' undeclared (first use this function)
221451_0_31555.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
221451_0_31555.cpp:6: error: expected `;' before "a"
221451_0_31555.cpp:7: error: expected `;' before "b"
221451_0_31555.cpp:8: error: expected `;' before "s"
221451_0_31555.cpp:15: error: `a' undeclared (first use this function)
221451_0_31555.cpp:15: error: `b' undeclared (first use this function)
221451_0_31555.cpp:20: error: `s' undeclared (first use this function)