编程输出如下图形。 * *** ***** ******* ***** ***

#include<stdio.h>
int  main()
{
    
    
	int n; 
	for (n = 1; n <8; n += 1)
		switch (n)
		{
    
    
		case 1:printf("   *\n");
			break;
		case 2:printf("  ***\n");
			break;
		case 3:printf(" *****\n");
			break;
		case 4:printf("*******\n");
			break;
		case 5:printf(" *****\n");
			break;
		case 6:printf("  ***\n");
			break;
		case 7:printf("   *\n");
			break;
		default:
			break;
		}
	return 0;
}