不使用（a+b）2这种方式，求两个数的平均值

 

 

#include<stdio.h> #include<stdlib.h> int main(){ int a = 12; int b = 25; double average = 0; if ((a + b) % 2 == 0) { average = (a + b) >> 1; } average = ((a + b) >> 1) + 0.5; printf("%lf\n", average); system("pause"); return 0; }