2.Software Myths Practitioner's myths Myth:Once we write the program and get it to work,our job is done. oo Cse3某公园有一游船码头，负责人希望开发一游船管理系统， 要求如下：当游客租船时，管理员输入S表示租船周期开始；当游客 还船时，管理员输入表示租船周期结束。一天结束时，要求系统打 印出粗船次数和平均租船时间。 新要求：输出一天中的最长 Realify:Someone once said that "the 租用时间。 sooner you begin 'writing code',the 新要求：将报告分上午和下 longer it'll take you to get done." 午输出。 Industry data indicate that between 60 新要求：当通信线路出问题 and 80 percent of all effort expended on 时，能从计算中刷除一切不 a program will be expended after it is 完整的租船信息。 delivered to the customer for the first time. Slide 1.13 13/21 2. Software Myths