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//求两个数中不同的位的个数 #include <stdio.h> int count_different(int a, int b) { int count = 0; int c = a^b; //a,b中不同的位即为1 while (c) { count++; c = c&(c - 1); //把c中最后一个1去掉 } return count; } int main() { printf("%d\n", count_different(3,8)); //3 printf("%d\n", count_different(0, 6)); //2 printf("%d\n", count_different(-1,1)); //31 return 0; }
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原文地址:http://blog.csdn.net/doudouwa1234/article/details/46697001