W3School TIY Editor

#include <iostream> #include <string> using namespace std; int main () { // 声明变量 int myNum = 5; // 整型 float myFloatNum = 5.99; // 单精度浮点数 double myDoubleNum = 9.98; // 双精度浮点数 char myLetter = 'D'; // 字符型 bool myBoolean = true; // 布尔型 string myString = "Hello"; // 字符串 // 输出变量值 cout << "整型: " << myNum << "\n"; cout << "单精度浮点: " << myFloatNum << "\n"; cout << "双精度浮点: " << myDoubleNum << "\n"; cout << "字符: " << myLetter << "\n"; cout << "布尔: " << myBoolean << "\n"; cout << "字符串: " << myString << "\n"; return 0; }