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

#define BUF 256

#define wordblock(s) s == ' ' || s == ',' || s == '.'\
|| s ==':' || s == ';' || s == ')' || s == '(' || s == '?'\
|| s == ']' || s == '[' || s == '@' || s == '/' || s == '<'\
|| s == '>' || s == '#' || s == '$' || s == '&' || s == '*'\
|| s == '%' || s == '{' || s == '}'

#define file_open(fp, fname, mode, errno) \
if((fp = fopen(fname, mode)) == NULL){\
fprintf(stderr, "Can't open file:%s\n", fname);\
exit(errno);\
}


int input_stream(FILE *fp, char *s);
void convert(char *s);
int output_stream(FILE *fp, char *s);