函数FUN功能，从三个形参a、b、c找出中间的数

#include <stdio.h>
int fun(int a,int b,int c)
{ int t;
t=(a>b)?(b>c?b:(a>c?c:a))
:((a>c)?a
:((b>c)?c:b));
return t;
}
main()
{
int a1=3,a2=5,a3=4,r;
r=fun(a1,a2,a3);
printf("\nThe middle number is: %d\n ",r);
}