整数的最右置位 [英] Off rightmost set bit of an integer

问题描述

我需要关闭最右边的设置位.我的方法是找到最右边的位置，然后从该位置移开.我这样做是为了编写代码.

All I need to off the rightmost set bit. My approach is to find the position of right most bit, then off that bit. I write this code to do so..

int POS(int n)
{
    int p=0;

    while(n)
    {
        if(n%2==0)
        {
            p++;
        }
        else
        {
            break;
        }  
        n=n/2;
     }
     return p;
  }

 int main(void)
 {

 int n=12;
 int p = POS(n);
 printf("%d \n", n&~(1<<p));

 return 0;

 }

有没有最简单的方法?

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