View Compilation Error

0_0_7223885_9158.c: In function `main':
0_0_7223885_9158.c:4: error: `_int64' undeclared (first use in this function)
0_0_7223885_9158.c:4: error: (Each undeclared identifier is reported only once
0_0_7223885_9158.c:4: error: for each function it appears in.)
0_0_7223885_9158.c:4: error: syntax error before "C"
0_0_7223885_9158.c: At top level:
0_0_7223885_9158.c:19: error: syntax error before "C"
0_0_7223885_9158.c: In function `C':
0_0_7223885_9158.c:21: error: `_int64' undeclared (first use in this function)
0_0_7223885_9158.c:21: error: syntax error before "s1"
0_0_7223885_9158.c:24: error: `s1' undeclared (first use in this function)
0_0_7223885_9158.c:26: error: `s2' undeclared (first use in this function)
0_0_7223885_9158.c:28: error: `s3' undeclared (first use in this function)