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dcr:绘制颜色重复-一种用于重复绘画和着色的小男孩编程语言
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2021-03-14
12:17:09
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DCR(绘图颜色重复) 一种用于绘图和重复着色的年轻男孩编程语言。 DCR是的最小子集,它经过有意简化,以便向学校中所有1-3年级的年轻男孩教授计算机编程知识(不仅仅是已经迷上数学和计算机的男孩)。 它还使用了简笔画而不是的乌龟来绘制。 编程语言语法 DCR始终在图形区域的中心以笔形朝上开始。 可以使用键盘或使用鼠标通过图形用户界面将编程语言命令输入为文本。 任何无效的命令或值都将被忽略,因此编程语言永远不会出错。 如果输入了部分命令(例如, left为lef或right为rig ),则将其解释为完整命令。 如果输入了无效值(例如right asdf ),则采用默认值(例如90度)。 转弯 right (或r ):向右旋转90度或任何角度(例如right , right 30或r 30 ) left (或l ):向左旋转90度或任何角度(例如, left , left 120
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