View Compilation Error

0_0_6691110_2815.cpp:5: error: `_int64' does not name a type
0_0_6691110_2815.cpp: In function `int main()':
0_0_6691110_2815.cpp:14: error: `_int64' undeclared (first use this function)
0_0_6691110_2815.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6691110_2815.cpp:14: error: expected `;' before "a"
0_0_6691110_2815.cpp:15: error: `a' undeclared (first use this function)
0_0_6691110_2815.cpp:15: error: `b' undeclared (first use this function)
0_0_6691110_2815.cpp:16: error: expected `;' before "des"
0_0_6691110_2815.cpp:17: error: expected `;' before "need"
0_0_6691110_2815.cpp:22: error: `des' undeclared (first use this function)
0_0_6691110_2815.cpp:25: error: `need' undeclared (first use this function)
0_0_6691110_2815.cpp:25: error: `C' undeclared (first use this function)