第3章 入门程序、常量、变量

<p><img src="https://img-bss.csdnimg.cn/202101180927589737.jpg" alt="" /><br style="color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" /><img style="border: 0px; vertical-align: middle; max-width: 100%; color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" src="https://10.idqqimg.com/qqke_course_info/ajNVdqHZLLA8iasqD5Gxiabjib6gym92PNSSSoYwFyUnMYGVibsHicgHbjTTv87c5lNiccyBa8ewRHzv8/" /><br style="color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" /><img style="border: 0px; vertical-align: middle; max-width: 100%; color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" src="https://10.idqqimg.com/qqke_course_info/ajNVdqHZLLDzEw9gibDuSL2ZQOpJ7BrTsb9yibVGiapDbnmoIOiceiauoLknJpatLrDIdvMY7ZQh18VA/" /><br style="color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" /><img style="border: 0px; vertical-align: middle; max-width: 100%; color: #333333; font-family: 'Hiragino Sans GB', 'Microsoft Yahei', arial, 宋体, 'Helvetica Neue', Helvetica, STHeiTi, sans-serif; font-size: 14px; background-color: #ffffff;" src="https://10.idqqimg.com/qqke_course_info/ajNVdqHZLLBSLQicUK5tJicG5vk5Zy7ibCenGevQ1xFiacQOkIA2hxggo2Uf2NiboKiaZRAcf15Z1J9Dk/" /></p>