十進位轉二進位-快速演算法

標籤：class   blog   code   width   2014   string   

#include<iostream>#include<string>

#include<algorithm>using namespace std;int main(int agrc, char *agrv[]){int iInPut = 0;while (cin >> iInPut){string sBinary;//轉換後的二進位儲存為字串，調用了預設建構函式初試化為空白串int temp = abs(iInPut);if (temp == 0){//cout.width(11);//以11位的寬度靠右對齊輸出cout << "          0-->0\n";continue;}while (temp){if (temp & 0x01){sBinary += '1';}else{sBinary += '0';}temp >>= 1;//對正數右移，高位補0}reverse(sBinary.begin(), sBinary.end());const char *cOutPut = sBinary.c_str();cout.width(11);cout << iInPut << (iInPut > 0 ? "-->" : "-->-") << cOutPut << endl;}return 0;}