CBASICA 有个清屏语句CLS,这并不说明只有CLS 才能清屏,用SCREEN 语句时也可以清屏,这两个语句的清屏特点是清除整个屏幕的图形和字符,使屏幕十分整洁.根据计算机专业人员长时间实践和广大用户开发各类系统软件的实际,这两个语句已经完全不能满足程序人员的要求,几乎到了“淘汰”的地步.其理由为它清屏时清掉的是整个屏幕,故而部 CBASICA has a clear statement CLS, this does not mean that only the CLS can be cleared, with the SCREEN statement can also be cleared, the two statements clear screen features clear the entire screen graphics and characters, the screen is very neat. Computer professionals practice a long time and the vast majority of users to develop various types of system software, these two statements have completely failed to meet the requirements of program staff, almost to the point of “elimination.” The reason is that when it cleared the entire screen Screen, so the Department