void readme()
{
	printf("------------------------------------README-------------------------------------------");
	printf("\nthis software is designed for sorting in order to compare the natural capacity of the 6 method of sorting algorthm\nyou can select one of the method to sort ,pressing proper key which is prompted in the selection menu.\nEach step will be with the hint.so you may not lose in the monochromatic ,dully,ugly interface\n");
}