W3School TIY Editor

#include <iostream> #include <string> using namespace std; int main () { // 创建 auto 变量 auto myNum = 5; // int 类型 auto myFloatNum = 5.99f; // float 类型 auto myDoubleNum = 9.98; // double 类型 auto myLetter = 'D'; // char 类型 auto myBoolean = true; // bool 类型 auto myString = string("Hello"); // std::string 类型 // 打印变量值 cout << "int 类型：" << myNum << "\n"; cout << "float 类型：" << myFloatNum << "\n"; cout << "double 类型：" << myDoubleNum << "\n"; cout << "char 类型：" << myLetter << "\n"; cout << "bool 类型：" << myBoolean << "\n"; cout << "string 类型：" << myString << "\n"; return 0; }