{ cout << "请输入一个整数:" << endl; int x = 0; cin >> x; //cout <<"二进制为:"<< bin << x << endl;为什么二进制bin未声明? cout <<"八进制为:"<< oct << x << endl; cout <<"十进制为:"<< dec << x << endl; cout <<"十六进制为:"<< hex << x << endl; //oct,dec,hex分别为8/10/16进制的英文缩写 } return 0;}
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