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/*  TAHMID RAHMAN
    DAMIAN FOREVER
     MATH LOVER
    NEVER GIVE UP
*/

#include<stdio.h>
#include<stdlib.h>
int main(int argc, char *argv[])
{
    FILE *from, *to;
    char ch;

    if(argc!=3)
    {
        printf("Usage: copy<source><destination>");
        exit(1);
    }

    if((from=fopen(argv[1], "rb"))==NULL)
    {
        printf("Can't open file.\n");
        exit(1);
    }

    if((to=fopen(argv[2], "wb"))==NULL)
    {
        printf("Can't open file.\n");
        exit(1);
    }

    while(!feof(from))
    {
        ch=fgetc(from);
        if(ferror(from))
        {
            printf("Error reading source file.\n");
            exit(1);
        }
        if(!feof(from))
        {
            fputc(ch, to);
        }
        if(ferror(to))
        {
            printf("Error writing destination file.\n");
            exit(1);
        }
    }
    if(fclose(from)==EOF)
    {
        printf("Error closing source file.\n");
        exit(1);
    }

    if(fclose(to)==EOF)
    {
        printf("Error closing destination file.\n");
        exit(1);
    }
    return 0;
}