在Pascal语言中，执行每条语句都是由计算机完成相应的操作。编写Pascal程序，是利用Pascal语句的功能来实现和达到预定的处理要求。“千里之行，始于足下”，我们从简单程序学起，逐步了解和掌握怎样编写程序。-In the Pascal language, the implementation of each statement is completed by the corresponding computer operation. Procedures for the preparation of Pascal is the use of Pascal statements to achieve the functionality and processing requirements to achieve target. " Journey of a thousand miles begins with a single step" , we learn from the simple process step by step how to understand and grasp the programming.