这个代码运行的时候为什么b%2*i无法赋值给zheng?
#include
using namespace std;
int main()
{
double a,c,xiao;
int b,zheng=0;
cin >> a;
b = (int)a;
c = a - (int)a;
while (b != 0)
{
int i = 1;
zheng += b % 2 *i;
b /= 2;
i *= 10;
}
cout << zheng << endl;
return 0;
}