View Compilation Error

0_0_2798304_32465.c: In function `main':
0_0_2798304_32465.c:6: error: syntax error before "long"
0_0_2798304_32465.c:10: error: `sum' undeclared (first use in this function)
0_0_2798304_32465.c:10: error: (Each undeclared identifier is reported only once
0_0_2798304_32465.c:10: error: for each function it appears in.)