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

int main(int argc, char **argv){
    if(argc == 1){
        printf("\033[1;31m");           //red
        printf("error: ");
        printf("\033[0;37m");           //white
        printf("no input and output file!\n");
        return -1;
    }
    if(argc == 2){
        printf("\033[1;31m");           //red
        printf("error: ");
        printf("\033[0;37m");           //white
        printf("no output file!\n");
        return -1;
    }

    if(access(argv[1], F_OK ) == 0) {
        //none
    } else {
        printf("\033[1;31m");           //red
        printf("error: ");
        printf("\033[0;37m");           //white
        printf("cannot open file!\n");
        return -1;
    }
    printf("\033[0;37m");               //white text

    FILE * file;                        //file pointer
    file = fopen(argv[1], "rb");        //open file
    fseek(file, 0L, SEEK_END);          //seek file size
    size_t filesize = ftell(file);      //get file size

    unsigned int filedata[filesize];    //make file data table
    fread(filedata, filesize, 1, file); //set file data in filedata table

    fclose(file);                       //close input file

    //put here data manipulation

    file = fopen(argv[2], "wb");        //open output file

    //write final data in output file
    fwrite(filedata , sizeof(char) , filesize , file);

    fclose(file);                       //close output file

    return 1;
}