main() { register i,j; register char c; for(;;) { for(i = 1;i <=5;i++) { j = 0; while((c = getchar()) != '\n') { if(c == '\0') { putchar('\n'); exit(); } putchar(c); j++; } if(i != 5) { if(! (j/8)) { putchar('\t'); putchar('\t'); } else putchar('\t'); } else putchar('\n'); } } }