0910循环课件

							//循环课件例题总结

package f.java;
import java.util.Scanner;
public class xunhuan0910
{	
	public static void main(String[] args)
		{
			double i=100;
			if(i<100)
			{
				
				System.out.println(i);
			}
			else if(i>20)
			{
				System.out.println(i+1*2);
			}
			else if(i>150)
			{
				System.out.println(i+1*2);
			}
			
			//switch循环
			int v=10;
			switch(v)
			{
			case 1:
				System.out.println("周1");
				break;
			case 2:
				System.out.println("周2");
				break;
			default:
				System.out.println("错误");
			}
			//while循环
			 i=0;
			while(i<100)
			{
				System.out.println(i);
				i++;
			}
			//do while
			int g=10;
			do
			{
				System.out.println(g);
				g++;
			}
			while(g<20);
			for(;g<30;g++)
			{
				
				if(g==25)
				{
					break;
				}
				System.out.println(g);
			}
			
		}
}