View Compilation Error

0_0_10550531_7511.c: In function `main':
0_0_10550531_7511.c:3: error: `__int64_t' undeclared (first use in this function)
0_0_10550531_7511.c:3: error: (Each undeclared identifier is reported only once
0_0_10550531_7511.c:3: error: for each function it appears in.)
0_0_10550531_7511.c:3: error: syntax error before "s"
0_0_10550531_7511.c: At top level:
0_0_10550531_7511.c:5: error: syntax error before "for"
0_0_10550531_7511.c:8: error: syntax error before "while"