>>9 #define n 100 int main() { int primes[n+1], pnum = 0; int i, x; for (x = 2; x <= n; ++x) { for (i = 0; i < pnum; ++i) { if (x % primes[i] == 0) break; } if (i == pnum) primes[pnum++] = x; } for (i = 0; i < pnum; ++i) { printf("%d\n", primes[i]); } }