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...
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; }; F *pFather = new F(); S *pSon = new S(...
pa=reinterpret_cast<A*>(la);//la太长,只取低32位0x5678abcd拷贝给pa 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>(...
unsigned long*和unsigned char*是不相关的指针类型,因此不能在它们之间使用static_cast,需要使用reinterp...
您应该使用reinterpret_cast<char *>而不是static_cast<char *>,因为数据类型不相关:例如,您可以在指向子类的指针与超类之间转换,或者在int之间转换和long,或void *与任何指针之间,但unsigned int *到char *不是“安全”,因此您无法使用static_cast。< / p> ...
typedef unsigned charBYTE;voidf(){char ch;int i=65;float f=2.5;double dbl;ch=static_cast<char>(i);// int to chardbl=static_cast<double>(f);// float to doublei=static_cast<BYTE>(ch);} 示例代码2: 代码语言:javascript 复制
// 假设这是一个编译器特定的类型,代表32位无符号整数typedefunsigned__uint32_tRegisterValue;// 自...
// static_cast_Operator_3.cpp // compile with: /LD /GR typedef unsigned char BYTE; void f() { char ch; int i = 65; float f = 2.5; double dbl; ch = static_cast<char>(i); // int to char dbl = static_cast<double>(f); // float to double i = static_cast<BYTE>(ch); ...
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; ...
constexpr unsigned char arr[sizeof(unsigned long long)]{ 1 }; constexpr bool value = static_cast<const unsigned long long&>(arr[0]) == 1; 加入int main(){},这将在Coliru、Ideone和VS2015上编译而没有错误或警告。这实际上是安全的,还是不安全,但不一定要出错?额 浏览2提问于2015-11-09得...