28 lines
444 B
C++
28 lines
444 B
C++
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// 静态成员变量不占类对象的空间
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#include <iostream>
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#include <cstring>
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#include <cstdlib>
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using namespace std;
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class A
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{
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public:
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int m;
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static int x;
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A(int m)
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{
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this->m = m;
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}
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};
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// int A::x = 20; // 静态变量初始化
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int main()
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{
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A a1(3);
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cout << "A size " << sizeof(A) << endl; // 同下
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cout << "a1 size " << sizeof(a1) << endl; // 4 Byte , 为 int m 的大小
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return 0;
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}
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