Improve by low frequency character search

#include 
#include 
int fclFind(int n, char *txt, int m, char *pat, int pos)
{
  int i, j, k;
  int nmatch = 0;
  char *cp;
  cp = strchr(txt, pat[pos]);
  while (cp) {
     i = cp - txt;
     k = i - pos;
     for (j = 0; j < m && txt[k] == pat[j]; j++)
  k++;
     if (j == m) {
  nmatch++;
  printf("%d \n", i - pos);
  cp = strchr(txt + i + m, pat[pos]);
     }
     else
  cp = strchr(txt + i + 1, pat[pos]);
  }
  return(nmatch);
}
/* End of File */