exercism

Exercism solutions.
git clone git://code.dwrz.net/exercism
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hamming.c (290B)

      1 #include <stdio.h>
      2 #include <string.h>
      3 
      4 int compute(char* s1, char* s2) {
      5   if (s1 == NULL || s2 == NULL || strlen(s1) != strlen(s2)) {
      6     return -1;
      7   }
      8   int distance = 0;
      9   for (int i = 0; s1[i] != '\0'; i++) {
     10     if (s1[i] != s2[i]) {
     11       distance++;
     12     }
     13   }
     14   return distance;
     15 }