怎么将一个无符号整数转为向上最接近该数的2的整数次方值

如何将一个无符号整数转为向上最接近该数的2的整数次方值
RT
例如: 3转成4; 11转成16; 222转成256;

谢谢各位了.

[解决办法]

C/C++ code

#include <stdio.h>int main(){  unsigned int x;  printf("Please input a number :");  scanf("%d", &x);  unsigned int mask = 0x10000000;  while (mask) {    if (mask & x) {      if (mask != x) {        mask <<= 1;      }      printf("The result is %u\n", mask);      return 0;    }    mask >>= 1;  }}
[解决办法]
1楼程序mask = 0x10000000应该是 0x80000000
[解决办法]
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引用:
C/C++ code


#include <stdio.h>
int main()
{
unsigned int x;
printf("Please input a number :");
scanf("%d", &amp;amp;x);
unsigned int mask = 0x10000000;
while (mask) {
if (ma……