摘要：首先说一个“默认参数提升”的概念：If the expression that denotes the called function has a type that does include a prototype, the arguments are implic... 阅读全文

摘要：文章原地址：点击打开链接首先先讲一下表达式中“类型提升”，来自《C专家编程》 整型提升就是char,short(无论unsigned，signed),位段类型，枚举类型都将提升为int类型。前提是int类型能完整容纳原先的数据，否则提升为unsigned in... 阅读全文