C++的cout输出二进制,八进制

#include 
#include  //输出二进制的头文件
using namespace std;

int main(){
	int a = 2149580819;
	cout << "八进制: " << oct << a << endl;
	cout << "十进制: " << dec << a << endl;
	cout << "十六进制: " << hex << a << endl;
	cout << "二进制: " << bitset(a) << endl;
	return 0;


}

 

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