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;
}