34 lines
375 B
C++
34 lines
375 B
C++
/**
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* @file friend_func.cpp
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* @brief 友元函数
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* @author 光城
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* @version v1
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* @date 2019-08-06
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*/
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#include <iostream>
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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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A(int _a):a(_a){};
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friend int geta(A &ca); ///< 友元函数
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private:
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int a;
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};
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int geta(A &ca)
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{
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return ca.a;
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}
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int main()
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{
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A a(3);
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cout<<geta(a)<<endl;
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return 0;
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}
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