/*
 * Program to copy file.  Input and output filenames are given 
 * as command-line arguments.
 */
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char* argv[]) {

    if (argc != 3) {
		fprintf(stderr, "usage:  %s infile outfile\n", argv[0]);
		return EXIT_FAILURE;
	}

	FILE * infile = fopen(argv[1], "r");
	if (infile == NULL) {
		fprintf(stderr, "cannot open file %s\n", argv[1]);
		return EXIT_FAILURE;
	}

	FILE * outfile = fopen(argv[2], "w");
	if (outfile == NULL) {
		fprintf(stderr, "cannot open file %s\n", argv[2]);
		return EXIT_FAILURE;
	}

	int inchar;
	while ((inchar = fgetc(infile)) != EOF) {
		fputc(inchar, outfile);
	}
	fclose(infile);
	fclose(outfile);
	return EXIT_SUCCESS;
}