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* Please tell me who you are. Run git config –global user.email “you@example.com” git config –global user.name “Your Name” to set your account’s defau 阅读全文
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一,宏的定义与撤销 #普通宏定义 #define PI 3.14 //编译阶段替换掉宏 #define T1 3+4 //容易产生歧义 #define T2 (3+4) //添加括号后,语义清楚 float r = 1.0; float area = PI * r * r; int a = 2* T 阅读全文
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Definition: The #define Directive You can use the #define directive to give a meaningful name to a constant in your program. The two forms of the synt 阅读全文