Thread: replace character while writing into a file

Code:

#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
{
   FILE *fin, *fout;
   char *s;
   fin = (argc > 1) ?fopen(*++argv, "r"):stdin;
   fout = (argc > 2)?fopen(*++argv, "w"):stdout;
   if (fout && fin) 
      do { 
          char buffer[1000]; 
          char *p;
          while(s = fgets(buffer, sizeof(buffer), fin))
          {
              p = s;
              while(p = strchr(s, 'w'))
              {
                  s = p;
                  if (p - buffer > 3 && p[-1] == 'o' && p[-2] == 'l' && p[-3] == 'f' && 
                      p[1] == 'o' && p[2] == 'r' && (p[1] = 'e'));
               }
               fputs(buffer, fout);
          }
        } while(s);
    else
       return 1;
   return 0;
}

--
Mats