View Compilation Error

0_0_6279627_19014.cpp: In function `int main()':
0_0_6279627_19014.cpp:8: error: `_int64' undeclared (first use this function)
0_0_6279627_19014.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6279627_19014.cpp:8: error: expected `;' before "c"
0_0_6279627_19014.cpp:14: error: `c' undeclared (first use this function)