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C++ keyword: struct

From cppreference.net
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用法

(since C++11)
  • 如果某个函数或变量的名称与某个非联合类类型的名称相同,可以在名称前添加 struct 以消除歧义,从而形成 详细类型说明符

示例

struct Foo; // 结构体的前向声明
struct Bar  // 结构体的定义
{
    Bar(int i) : i(i + i) {}
    int i;
};
enum struct Pub // 作用域枚举(C++11起)
{
    b, d, p, q,
};
int main()
{
    Bar Bar(1);
    struct Bar Bar2(2); // 详细类型说明
}

参见

(自 C++11 起)