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

int main(int argc, char *argv[]) {
    if (argc <= 1) {
        printf("Usage: copy <dst> <src>\n");
        return EXIT_SUCCESS;
    } else if (argc > 3) {
        fprintf(stderr, "Too many arguments\n");
        return EXIT_FAILURE;
    }

    FILE *src = fopen(argv[1], "rb");
    FILE *dst = fopen(argv[2], "wb");

    if (src == NULL) {
        fprintf(stderr, "Unable to open source file\n");
        return EXIT_FAILURE;
    }

    if (dst == NULL) {
        fprintf(stderr, "Unable to open destination file\n");
        return EXIT_FAILURE;
    }

    char c;
    while ((c = fgetc(src)) != EOF) {
        fputc(c, dst);
    }

    fclose(src);
    fclose(dst);

    return EXIT_SUCCESS;
}