string int2binarystring(int iNumber,int iBits)
{
vector<int> bTemp;
for(int j=(iBits-1);j>=0;j--)
{
bTemp.push_back((iNumber>>j)&1);
}
string sBinary;
for(int k=0;k<bTemp.size();k++)
{
if(0 == bTemp.at(k)
{
sBinary += "0";
}
else
{
sBinary += "1";
}
}
return sBinary;
}原文：https://blog.51cto.com/11998922/2530398