1、使用自定义函数:
#include <iostream>
using std::cout;
using std::endl;
using std::string;
string toBinary(int n)
{
string r;
while (n != 0){
r += ( n % 2 == 0 ? "0" : "1" );
n /= 2;
}
return r;
}
int main() {
int number = 15;
cout << "decimal: " << number << endl;
cout << "binary : " << toBinary(number) << endl;
return EXIT_SUCCESS;
}
2、使用bitset:
#include <iostream>
#include <bitset>
using std::cout; using std::endl;
using std::string; using std::bitset;
int main() {
int number = 15;
bitset<32> bs1(number);
cout << "binary: " << bs1 << endl;
bitset<16> bs2(number);
cout << "binary: " << bs2 << endl;
bitset<8> bs3(number);
cout << "binary: " << bs3 << endl;
bitset<5> bs4(number);
cout << "binary: " << bs4 << endl;
cout << endl;
return EXIT_SUCCESS;
}
原文链接: https://www.cnblogs.com/noodles1417/p/16495985.html
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