设计一个窗口,在该窗口中练习键盘的响应,要求如下:单击键盘上的向上箭头时,窗口中显示“You had hitted the up key”;单击键时,窗口中显示“You had hitted the SHIFT key”;单击键时,窗口中显示“You had hitted the CTRL key”;单击键时,窗口中显示“You had hitted the CTRL A key”;单击键时,窗口中显示“You had hitted the SHIFT B key”。
判断字变量DA1中的数据性质,显示不同的提示信息。 要求:(1)若DA1是非零的正偶数,则显示“DA1 IS A POSITIVE EVEN DATA!”; (2)若DA1是零,则显示“DA1 IS ZERO!”; (3)若DA1是负数,则显示“DA1 IS A NEGATIVE DATA!”; (4)若DA1是奇数,则显示“DA1 IS A ODD DATA!”。 2、试用循环结构程序完成以下功能。 题目:比较两个字符串STR1和STR2是否相同,若相同,显示“MATCH”;否则显示“NO