Compare the following two extern functions in c++:

(1)

1 extern "C" 2 { 3 void test() 4 { 5 　　vector<int> a(10); 6 　　for (auto i = 0; i < 10; ++i) 7 　　{ 8 　　a[i] = i * i; 9 　　cout << a[i] << endl; 10 　　} 11 } 12 }

(2)

1 extern "C" 2 { 3 void test() 4 { 5 ofstream otf; 6 otf.open("output"); 7 vector<int> a(10); 8 for (auto i = 0; i < 10; ++i) 9 { 10 a[i] = i * i; 11 otf << a[i] << " "; 12 } 13 otf.close() 14 } 15 }

The first one can be called by python but the second can not. Why?

轉載于:https://www.cnblogs.com/luglio/p/5034802.html

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