View Compilation Error

0_0_8633975_2412.c:7: error: syntax error before "c"
0_0_8633975_2412.c:20: error: syntax error before "sum"
0_0_8633975_2412.c: In function `sum':
0_0_8633975_2412.c:21: error: `__int64' undeclared (first use in this function)
0_0_8633975_2412.c:21: error: (Each undeclared identifier is reported only once
0_0_8633975_2412.c:21: error: for each function it appears in.)
0_0_8633975_2412.c:21: error: syntax error before "s"
0_0_8633975_2412.c:23: error: `s' undeclared (first use in this function)
0_0_8633975_2412.c: In function `main':
0_0_8633975_2412.c:31: error: `EOF' undeclared (first use in this function)
0_0_8633975_2412.c:33: error: `__int64' undeclared (first use in this function)
0_0_8633975_2412.c:33: error: syntax error before "s"
0_0_8633975_2412.c:36: error: `s' undeclared (first use in this function)