W3School TIY Editor

#include <iostream> using namespace std; int main() { // 创建不同数据类型的变量 int items = 50; // 物品数量 double cost_per_item = 9.99; // 单个物品价格 double total_cost = items * cost_per_item; // 计算总价 char currency = '$'; // 货币符号 // 输出变量信息 cout << "物品数量: " << items << "\n"; cout << "单价: " << cost_per_item << currency << "\n"; cout << "总价 = " << total_cost << currency << "\n"; return 0; }