This code here: (unsigned int)(ch - start) <= (unsigned int)(end - start); Was changed to static_cast<unsigned>(ch - start) <= static_cast<unsigned>(end - start); instead of: static_cast<unsigned int>(ch - start) <= static_cast<unsigned int>(end - start); Is there ANY...
为什么argc是'int'(而不是'unsigned int')? int (*x)[n] = (int (*)[n]) _x是什么意思? int列表-> int而不是'a list -> 'a 常量int &x =4与常量int x=4的差异 为什么使用` `attr(x,"class")`而不是`class(x)`? int x = time(NULL); => SEGFAULT? 为什么(x^0===x)输...
则该字符对象的整数值等于该字符的单个字符文字形式的值。由实现定义char对象是否可以保存负值。字符可以显...
用法:static_cast < type-id > ( expression ) 该运算符把expression转换为type-id类型,但没有运行时类型检查来保证转换的安全性。它主要有如下几种用法: ①用于类层次结构中基类(父类)和派生类(子类)之间指针或引用的转换。 进行上行转换(把派生类的指针或引用转换成基类表示)是安全的; 进...
unsigned int ui = 25; char c = static_cast<char>(ui); int i = static_cast<int>(d); int j = static_cast<int>(B); //父类子类转换 class F //father { public: int _father; }; class S : public F //son { public: _son; ...
static_cast不能从整数强制转换为指针,反之亦然。也不能在两个不相关的类型之间强制转换。unsigned long...
unsignedint u=reinterpret_cast<unsignedint>(pa);//pa逐个比特拷贝到u cout<< hex<< u<< endl;//输出 5678abcd typedefvoid(* PF1)(int); typedefint(* PF2)(int,char*); PF1pf1;PF2pf2; pf2=reinterpret_cast<PF2>(pf1);//两个不同类型的函数指针之间可以互相转换 ...
1. 基础类型之间互转。如:float转成int、int转成unsigned int等 2. 指针与void*之间互转。如:float*转成void*、CBase*转成void*、函数指针转成void*、void*转成CBase*等 3. 派生类指针【引用】转成基类指针【引用】。如:Derive*转成Base*、Derive&转成Base&等 ...
23. unsigned int u = reinterpret_cast<unsigned int>(pa);//pa逐个比特拷贝到u 24. cout << hex << u << endl; //输出 5678abcd 25. typedef void (* PF1) (int); 26. typedef int (* PF2) (int,char *); 27. PF1 pf1; PF2 pf2; ...
What I'm experiencing is the refusal of my compiler to cast my unsigned char pointer to a signed char pointer. I got confused for a little while, because I had been using static_cast to convert signedness for the longest time. Then I did a little digging (well, it w...