①在需要截取视频片段的起始和结束处分别单击“选择开始点”和“选择结束点”按钮
②单击“循环/选择录取区域”按钮
③单击“录像指定区域为MPG或MPV文件”按钮,保存截取的视频
④用超级解霸软件播放需要截取的VCD
PRIVATE SUB FORM__CLICK( )
S=0
FOR A = 1 TO 5
FOR B= 1 TO 3
S=S+1
NEXT B
NEXT A
PRINT S
END SUB
s = 0 :x = 2:y = 49
Do While x <= Sqr(y)
s = s + x
x = x + 2
Loop
该程序段运行后,x的值是( )