View Compilation Error

0_0_3223946_9188.c: In function `main':
0_0_3223946_9188.c:4: error: `_int64' undeclared (first use in this function)
0_0_3223946_9188.c:4: error: (Each undeclared identifier is reported only once
0_0_3223946_9188.c:4: error: for each function it appears in.)
0_0_3223946_9188.c:4: error: syntax error before "b"
0_0_3223946_9188.c:7: error: `b' undeclared (first use in this function)
0_0_3223946_9188.c:7: error: `c' undeclared (first use in this function)