Our own string compare function : String Compare « String « C / ANSI-C

1. C / ANSI-C
2. String
3. String Compare

Our own string compare function

#include <stdlib.h>
#include <ctype.h>
#include <stdio.h>

int comp(const void *ch, const void *s);

int main(void)
{
  char *alpha = "abcdefghijklmnopqrstuvwxyz";


  char ch;
  char *p;

  printf("Enter a character: ");
  ch = getchar();
  ch = tolower(ch);
  p = (char *) bsearch(&ch, alpha, 26, 1, comp);
  if(p)
     printf(" %c is in alphabet\n", *p);
  else
     printf("is not in alphabet\n");

  return 0;
}

/* Compare two characters. */
int comp(const void *ch, const void *s)
{
  return *(char *)ch - *(char *)s;
}

           
       

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