bool ispowoftwo(int n)
{
if(n==0)
{
return false;
}
if(n==1)
{
return true;
}
do
{
if(n%2==0)
{
n=n/2;
}
else
{
return false;
}
while(n!=1);
return true;
}
Determining whether a number is a power of 2
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Origin blog.csdn.net/huangziguang/article/details/104404663
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