View Compilation Error

0_0_2335406_30679.cpp: In function `int main()':
0_0_2335406_30679.cpp:3: error: `_int64' undeclared (first use this function)
0_0_2335406_30679.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2335406_30679.cpp:3: error: expected `;' before "m"
0_0_2335406_30679.cpp:6: error: `m' undeclared (first use this function)
0_0_2335406_30679.cpp:6: error: `x' undeclared (first use this function)