View Compilation Error

138994_0_503.c: In function `main':
138994_0_503.c:5: error: `_int64' undeclared (first use in this function)
138994_0_503.c:5: error: (Each undeclared identifier is reported only once
138994_0_503.c:5: error: for each function it appears in.)
138994_0_503.c:5: error: syntax error before "c"
138994_0_503.c:11: error: `c' undeclared (first use in this function)
138994_0_503.c:17: error: `d' undeclared (first use in this function)