常数与常量实验

<p> <span style="font-family:SimSun;"> </p> <p> <span style="font-family:SimSun;"></span> </p> <p> 体验常量的定义方法以及特殊字符的使用 </p> <p> 请根据以下要求编程</span>&nbsp;&nbsp; <table style="width:500px;" border="1" cellspacing="1" bordercolor="#000000" cellpadding="1"> <tbody> <tr> <td> <p> <span style="font-family:SimSun;">用define命令定义常量oct1，并设置为八进制数77</span> </p> <p> <span style="font-family:SimSun;">用const命令定义整型常量hex1，并设置为十六进制数FF</span> </p> <p> <span style="font-family:SimSun;">用const命令定义字符串常量str1，并设置为“Welcome”</span> </p> <p> <span style="font-family:SimSun;">用const命令定义字符常量dq1，并设置为一个双引号。（参考特殊字符）</span> </p> <p> <span style="font-family:SimSun;">用</span><span style="font-family:SimSun;">define</span><span style="font-family:SimSun;">命令定义字符常量nl</span><span style="font-family:SimSun;">1，并设置为一个<strong>换行</strong>符</span><span style="font-family:SimSun;">。（参考特殊字符）</span> </p> <p> <span style="font-family:SimSun;">用</span><span style="font-family:SimSun;">define</span><span style="font-family:SimSun;">命令定义字符串</span><span style="font-family:SimSun;">常量str2</span><span style="font-family:SimSun;">，并设置为“Gre</span><span style="font-family:SimSun;">at!</span><span style="font-family:SimSun;">”</span> </p> <p> <span style="font-family:SimSun;">用const命令定义常量pi，并设置为3.14159</span> </p> <p> <span style="font-family:SimSun;">输出常量oct1的值并换行</span> </p> <p> <span style="font-family:SimSun;">输出常量hex1的值并换行 </p> <p> <span style="font-family:SimSun;">输出常量str1的值并换行</span><span style="font-family:SimSun;"> </p> <p> <span style="font-family:SimSun;">输出常量dq1的值并换行 </p> <p> <span style="font-family:SimSun;">输出常量nl1的值并换行 </p> <p> <span style="font-family:SimSun;">输出常量str2的值并换行 </p> <p> <span style="font-family:SimSun;">输出常量pi*100的值并换行</span></span></span></span></span></span> </p> </td> </tr> </tbody> </table> </p> <p> <span style="font-family:SimSun;">部分样例输出</span> </p> <p> <span style="font-family:SimSun;">63</span> </p> <p> <span style="font-family:SimSun;"></span>&nbsp; </p> <p> <span style="font-family:SimSun;">提示：</span> </p> <p> <span style="font-family:SimSun;">#define 不用加类型说明，不用加等号，最后面不用加分号</span> </p> <p> <span style="font-family:SimSun;"></span><span style="font-family:SimSun;">const 要加类型说明，要用等号，后面要加英文分号</span> </p> <p> <span style="font-family:SimSun;">特殊字符r '\t'等，是用英文单引号括起来&nbsp;</span> </p> <p> <strong><span style="font-family:SimSun;">字符串</span></strong><span style="font-family:SimSun;">用英文</span><strong><span style="font-family:SimSun;">双引号</span></strong><span style="font-family:SimSun;">括起来，</span> 字符串的类型说明为 string </p> <p> <strong><span style="font-family:SimSun;">字符</span></strong><span style="font-family:SimSun;">用英文</span><strong><span style="font-family:SimSun;">单引号</span></strong><span style="font-family:SimSun;">括起来。</span> </p>