View Compilation Error

0_0_2543878_3207.cpp: In function `int main()':
0_0_2543878_3207.cpp:8: error: `_int64' undeclared (first use this function)
0_0_2543878_3207.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2543878_3207.cpp:8: error: expected `;' before "n"
0_0_2543878_3207.cpp:9: error: `n' undeclared (first use this function)
0_0_2543878_3207.cpp:11: error: expected `;' before "b"
0_0_2543878_3207.cpp:12: error: expected `;' before "c"
0_0_2543878_3207.cpp:13: error: expected `;' before "a"
0_0_2543878_3207.cpp:14: error: `a' undeclared (first use this function)
0_0_2543878_3207.cpp:14: error: `b' undeclared (first use this function)
0_0_2543878_3207.cpp:14: error: `c' undeclared (first use this function)