View Compilation Error

0_0_1644252_191.cpp:5: error: `_int64' does not name a type
0_0_1644252_191.cpp: In function `void output(int*)':
0_0_1644252_191.cpp:14: error: `caculate' undeclared (first use this function)
0_0_1644252_191.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)