View Compilation Error

0_0_2862584_11453.cpp:2: error: `int64' does not name a type
0_0_2862584_11453.cpp: In function `int main()':
0_0_2862584_11453.cpp:7: error: `d' undeclared (first use this function)
0_0_2862584_11453.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)