#include <iostream> using namespace std; class Sample { public: int v; Sample( const int vv = 0 ) { v = vv; } Sample( const Sample & a ) { v = a.v + 2; } }; void PrintAndDouble(Sample o) { cout << o.v; cout << endl; } int main() { Sample a(5); Sample b = a; PrintAndDouble(b); Sample c = 20; PrintAndDouble(c); Sample d; d = a; cout << d.v; return 0; }当用一个对象去初始另一个对象时或者对象作为函数参数时,会调用复制构造函数。所以复制构造函数不要瞎写。
程序设计MOOC 奇怪的类复制
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转载自blog.csdn.net/xutian_curry/article/details/80472169
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