、以下程序运行结果是（）#includevoidf(inta，intb);voidf(inta，intb){intt;t=a;a=b;b=t;}voidmain(){intx=，y=，z=;if(x>y)f(x，y);if(y>z)f(y，z);if(x>y)f(x，y);printf(“%d，%d，%d”，x，y，z);}