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用 hex, oct 轉換 display 的數字的Base

#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
int A = 123456789;
cout << hex << A << endl; // base 10 -> base 16
cout << oct << A << endl; // base 10 -> base 8
system("pause");

return 0;
}

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