控制语句: Demo_ForPower

 

package www.control;

public class Demo5_ForPower {
    public static void main(String[] args) {
        int[] num = {1,2,3,4,5}; //定义数组

        //for (声明语句:表达式){
        // 代码语句
        // }
        for (int x:num){
            System.out.println(x+"\t");
        }

        char[] n1 = {1,2,3,4,5,6,7,8,9};
        char[] n2 = {1,2,3,4,5,6,7,8,9};

        for(int x1:n1){  //自动转换char到int，参见之前数据类型介绍。
            for(int x2 : n2){
                if (x1 <= x2) {
                    System.out.print(x1+"*"+x2+"="+x1*x2+"\t");
                }
            }
            System.out.println();
        }
    }
}