C++ 数据类型示例

// 创建不同数据类型的变量
int items = 50;
double cost_per_item = 9.99;
double total_cost = items * cost_per_item;
char currency = '$';

// 打印变量
cout << "物品数量: " << items << "\n";
cout << "每件物品价格: " << cost_per_item << "" << currency << "\n";
cout << "总计金额 = " << total_cost << "" << currency << "\n";