delete[] ptr; size =strlen(chrs); ptr =newchar[size +1]; strcpy(ptr, chrs); } return(*this); } intmain{ stringstr; str ="Hello World"; cout<< str <<endl; return(0); } 6骨灰级程序员写的代码 [ uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820) ] library LHello { //bring in...
char*CFStringToCString(CFStringRef input){if(input ==NULL)returnNULL;intstrlen= CFStringGetMaximumSizeForEncoding(CFStringGetLength(input), kCFStringEncodingUTF8);char*output =NewPtr(strlen+1); CFStringGetCString(input, output,strlen+1, kCFStringEncodingUTF8);returnoutput; } 开发者ID:dndump,项目名...
make_shared在内部调用new，所以不能同时使用。在这种情况下，只调用new，因为make_shared不适用于数组。...
range.Append(_L8("-\0\0"));char* temp =newchar[range.Length() +1];memset(temp,0, range.Length() +1);memcpy(temp, range.Ptr(), range.Length()); setRequestProperty("RANGE", (constchar*) temp);//CommonUtils::WriteLogL(_L8("RANGE:"), range);deletetemp; }returntrue; } 开发者...
char_array.c: In function 'rcutils_char_array_strcat': /home/prostrain/microros_ws/firmware/mcu_ws/uros/rcutils/src/char_array.c:239:10: note: length computed here 239 | return rcutils_char_array_strncat(char_array, src, strlen(src)); | ^~~~ In file included from /home/prostrain...
#include <iostream> #include <string> int main() { int* ptr = new int(10); std::string str = "The value of ptr is: "; // 将int ptr转换为字符串 std::string ptrStr = std::to_string(*ptr); // 进行字符串拼接 std::string result = str + ptrStr; std::cout << result << ...
unique 返回是否是独占所有权( use_count 为 1) swap 交换两个 shared_ptr 对象(即交换所拥有的对象) reset 放弃内部对象的所有权或拥有对象的变更, 会引起原有对象的引用计数的减少 get 返回内部对象(指针), 由于已经重载了()方法, 因此和直接使用对象是一样的.如 shared_ptr<int> sp(new int(1)); sp...
new char[strlen(other.data) + 1]; strcpy(data, other.data); std::cout << "Copy Assignment: " << data << std::endl; return *this; } ~MyClass() { delete[] data; std::cout << "Destructor: " << data << " (but it's already ...
name =newchar(20);memcpy(name, s.name,strlen(s.name)); cout <<"copy Student"<< endl; }intmain(){ {// 花括号让s1和s2变成局部对象,方便测试Student s1;Students2(s1);// 复制对象}system("pause");return0; } 执行结果:调用一次构造函数,一次自定义拷贝构造函数,两次析构函数。两个对象的指针...
#if defined(STEP2) void setString ( const char *msg ) { delete [] b; b = new char[ strlen(msg) + 1 ]; strcpy( b, msg ); } const char *getString ( void ) { return b; } #endif int a; #if defined(STEP2) private: #endif char *b; }; foo func1 ( void ) { foo var...