View Compilation Error

232624_0_24464.c: In function `main':
232624_0_24464.c:6: error: syntax error before "int"
232624_0_24464.c:7: error: `a' undeclared (first use in this function)
232624_0_24464.c:7: error: (Each undeclared identifier is reported only once
232624_0_24464.c:7: error: for each function it appears in.)
232624_0_24464.c:10: error: `i' undeclared (first use in this function)
232624_0_24464.c:16: error: `n' undeclared (first use in this function)