如何使用另一个struct中的struct? [英] How to use a struct inside another struct?
问题描述
我想使用嵌套结构,但我不知道如何在其中输入数据,例如:
struct A {
int data;
struct B;
};
struct B {
int number;
};
所以在主要使用它时:
int main(){
A阶段;
stage.B.number;
}
是不是如果不是如何使用它
结构的每个成员变量通常具有名称和类型。在您的代码中, A
的第一个成员具有类型 int
和名称 data
。第二个成员只有一个类型。你需要给它一个名字。让我们说 b
:
struct A {
int data ;
B b;
};为了做到这一点,编译器需要已经知道 B $ 是,因此在之前声明 A 。
<要访问嵌套成员,请按名称引用每个成员,并以分隔。
: 一个阶段;
stage.b.number = 5;
I want to use a nested structure but i dont know how to enter data in it, for example:
struct A {
int data;
struct B;
};
struct B {
int number;
};
So in the main when I come to use it :
int main() {
A stage;
stage.B.number;
}
Is that right if not how do i Use it??
解决方案 Each member variable of a struct generally has a name and a type. In your code, the first member of A
has type int
and name data
. The second member only has a type. You need to give it a name. Let's say b
:
struct A {
int data;
B b;
};
To do that, the compiler needs to already know what B
is, so declare that struct before you declare A
.
To access a nested member, refer to each member along the path by name, separated by .
:
A stage;
stage.b.number = 5;
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