tests/tests2/118_switch.c

   1 #include <limits.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5 int ibdg(long long n)
   6 {
   7     switch (n) {
   8     case                     1LL ...                   9LL: return 1;
   9     case                    10LL ...                  99LL: return 2;
  10     case                   100LL ...                 999LL: return 3;
  11     case                  1000LL ...                9999LL: return 4;
  12     case                 10000LL ...               99999LL: return 5;
  13     case                100000LL ...              999999LL: return 6;
  14     case               1000000LL ...             9999999LL: return 7;
  15     case              10000000LL ...            99999999LL: return 8;
  16     case             100000000LL ...           999999999LL: return 9;
  17     case            1000000000LL ...          9999999999LL: return 10;
  18     case           10000000000LL ...         99999999999LL: return 11;
  19     case          100000000000LL ...        999999999999LL: return 12;
  20     case         1000000000000LL ...       9999999999999LL: return 13;
  21     case        10000000000000LL ...      99999999999999LL: return 14;
  22     case       100000000000000LL ...     999999999999999LL: return 15;
  23     case      1000000000000000LL ...    9999999999999999LL: return 16;
  24     case     10000000000000000LL ...   99999999999999999LL: return 17;
  25     case    100000000000000000LL ...  999999999999999999LL: return 18;
  26     case   1000000000000000000LL ... 9223372036854775807LL: return 19;
  27     case  -9223372036854775807LL-1LL ...              -1LL: return 20;
  28     }
  29     return 0;
  30 }
  31
  32 int ubdg(unsigned long long n)
  33 {
  34     switch (n) {
  35     case                    1ULL ...                    9ULL: return 1;
  36     case                   10ULL ...                   99ULL: return 2;
  37     case                  100ULL ...                  999ULL: return 3;
  38     case                 1000ULL ...                 9999ULL: return 4;
  39     case                10000ULL ...                99999ULL: return 5;
  40     case               100000ULL ...               999999ULL: return 6;
  41     case              1000000ULL ...              9999999ULL: return 7;
  42     case             10000000ULL ...             99999999ULL: return 8;
  43     case            100000000ULL ...            999999999ULL: return 9;
  44     case           1000000000ULL ...           9999999999ULL: return 10;
  45     case          10000000000ULL ...          99999999999ULL: return 11;
  46     case         100000000000ULL ...         999999999999ULL: return 12;
  47     case        1000000000000ULL ...        9999999999999ULL: return 13;
  48     case       10000000000000ULL ...       99999999999999ULL: return 14;
  49     case      100000000000000ULL ...      999999999999999ULL: return 15;
  50     case     1000000000000000ULL ...     9999999999999999ULL: return 16;
  51     case    10000000000000000ULL ...    99999999999999999ULL: return 17;
  52     case   100000000000000000ULL ...   999999999999999999ULL: return 18;
  53     case  1000000000000000000ULL ...  9999999999999999999ULL: return 19;
  54     case 10000000000000000000ULL ... 18446744073709551615ULL: return 20;
  55     }
  56     return 0;
  57 }
  58
  59 int main(int argc, char **argv)
  60 {
  61     unsigned int i;
  62     unsigned long long v = 1;
  63
  64     v = 1;
  65     for (i = 1; i <= 20; i++) {
  66         printf("%lld : %d\n", (long long) v, ibdg((long long)v));
  67         v *= 10;
  68     }
  69     v = 1;
  70     for (i = 1; i <= 20; i++) {
  71         printf("%llu : %d\n", v, ubdg(v));
  72         v *= 10;
  73     }
  74     return 0;
  75 }