upload

CplusplusPractice/classtest.cc

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+#include <iostream>
+
+class A {
+  int x;
+
+ public:
+  A(int c) : x(c) {}
+  A(const A &a) {
+    x = a.x;
+    std::cout << "복사 생성" << std::endl;
+  }
+};
+
+class B {
+  A a;
+
+ public:
+  B(int c) : a(c) {}
+  B(const B &b) : a(b.a) {}
+  A get_A() {
+    A temp(a);
+    return temp;
+  }
+};
+
+int main() {
+  B b(10);
+
+  std::cout << "---------" << std::endl;
+  A a1 = b.get_A();
+}