View Compilation Error

155256_0_2451.c: In function `main':
155256_0_2451.c:10: error: `i' undeclared (first use in this function)
155256_0_2451.c:10: error: (Each undeclared identifier is reported only once
155256_0_2451.c:10: error: for each function it appears in.)
155256_0_2451.c:12: error: `i1000' undeclared (first use in this function)