[C-CODE] Copy file contents using system calls

/*Code open-sourced by http://codejar-lab.in
This is only for study purpose only and if you found any error use own logic to correct it so dont comment error.
*/
#include <syscall.h>

#include <unistd.h>

#include <sys/types.h>

#include <fcntl.h>

#include <sys/uio.h>

#include <sys/stat.h>

#include <stdio.h>

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

{

        int fd;

        fd=open(argv[1],O_CREAT | O_RDONLY);

        if(fd==-1)

        {

                printf("error opening the file");

        }

        void *buf = (char*) malloc(120);

        int count=read(fd,buf,120);

        printf("count : %d",count);

        printf("%s",buf);

        close(fd);

        int f1;

        f1=open(argv[2],O_CREAT | O_WRONLY);

        if(f1==-1)

        {

                printf("error opening the file");

        }

        int c;

        while(count=read(fd,buf,120)>0)

        {

                c=write(f1,buf,120);

        }

        if(c==-1)

 {

                printf("error writing to the file");

        }



        close(f1);

}

How to run it? 
$gcc file.c
$./a.out