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#define dada 5;在整个程序中dada就代表了5;
#define da “you are a best boy” ;整个程序中da代表了“you are a best boy“;
#define dadada ‘A’; 整个程序中dadada代表了‘A’;
这里的dada,dadada,da都是符号常量;
const int dadadada = 12;此处定义dadadada为一个符号常量;
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原文地址:http://my.oschina.net/u/2423028/blog/484193