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C++ 引用


创建引用

引用变量是现有变量的“引用”,它使用 & 运算符创建

string food = "Pizza";  // food 变量
string &meal = food;    // food 的引用

现在,我们可以使用变量名 food 或引用名 meal 来引用 food 变量

例子

string food = "Pizza";
string &meal = food;

cout << food << "\n";  // 输出 Pizza
cout << meal << "\n";  // 输出 Pizza
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