language: C99 strict (gcc-4.7.2)
date: 544 days 11 hours ago
link:
visibility: public 
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#include <stdio.h>
 
int main(void) {
  int number, width = 6;
  for (number = 1; number < 9999999; number *= 7) {
    int digits = printf("%d", number);
    if (digits < width) printf("%0*d", width-digits, 0);
    puts("");
  }
  return 0;
}