C语言3个错误求解答

Question

下面的程序试图计算由键盘输入的任意两个整数的平均值
1 #include <stdio.h>
2int main()
3 {
4 int x,y,a;
5 scanf("%x,%y",&x,&y);
6 a=(x+y)/2;
7 printf("The average is: %d\n", a); 8 return 0;
9 }

Answer 1

应该要求小数啊，比如5 6平均不就是5.5嘛 这样呢
#include <stdio.h>
int main()
{
int x,y;
double a;
scanf("%d,%d",&x,&y);
a=(x+y)/2.0;
printf("The average is: %.1f\n", a);
return 0;
}