View Compilation Error

0_0_3874321_5416.cpp: In function `int main()':
0_0_3874321_5416.cpp:5: error: `_int64' undeclared (first use this function)
0_0_3874321_5416.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3874321_5416.cpp:5: error: expected `;' before "d"
0_0_3874321_5416.cpp:6: error: `d' undeclared (first use this function)