/* 
 * Simple contrived example of character I/O on files:
 * Copy characters from input to output, counting them.
 * Filenames given as command-line arguments.
 */
#include <stdio.h>

int main(int argc, char *argv[]) {
	if (argc != 3) {
		printf("arguments:  infile outfile\n");
		return 1;
	}
	FILE * infile = fopen(argv[1], "r");
	if (infile == NULL) {
		printf("cannot open input\n");
		return 1;
	}
	FILE * outfile = fopen(argv[2], "w");
	if (outfile == NULL) {
		printf("cannot open output\n");
		return 1;
	}

	/* code from simple-chars.c, reworked a bit */
	int inchar;
	int count = 0;
	while ((inchar = fgetc(infile)) != EOF) {
		count += 1;
		fputc(inchar, outfile);
	}
	printf("%d chars\n", count);

	fclose(infile);
	fclose(outfile);
	return 0;
}