QQ327536427的博客

[code="C"]!(i& (i-1))[/code]

[code="C"]int test(int n) { int nCount = 0; while(n) { nCount++; n = n & (n - 1); } return nCount; }[/code] 例如test...

[code="c"] #define CHAR_BIT (8) #define BITMASK(b) (1