No.of bits required to change to convert integer a to b

int BitSwapReqd(int a, int b)
{
int temp1=0;
int temp2=0;
int count=0;

while(a!=0 || b!=0)
{
temp1 = a & 1;
temp2 = b & 1;
a = a>>1;
b = b>>1;
if(temp1 != temp2)
count++;
}
return count;
}