/* link this with sortfile from 1.c */


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

int main(int argc, char **argv)
{
    FILE *infp, *outfp;
    extern void sortfile(FILE *in, FILE *out);

    if (argc != 3) {
	printf("usage: %s file1 file2\n", argv[0]);
	return 1;
    }

    if ((infp = fopen(argv[1], "r")) == NULL) {
	perror(argv[1]);
	return 1;
    }
    if ((outfp = fopen(argv[2], "w")) == NULL) {
	perror(argv[2]);
	return 1;
    }

    sortfile(infp, outfp);

    return 0;
}