bufferFile(&myfile, 0);
char chksum = getCheckSum(myfile.file_data, myfile.file_size);
printf("Checksum for File: %X.\n", chksum);
bufferFile(&myfile, 0);
char chksum = getCheckSum(myfile.file_data, myfile.file_size);
printf("Checksum for File: %X.\n", chksum);