/* Note:Your choice is C IDE */#include "stdio.h"void main(){ float a,b,t; scanf("%f%f",&a,&b); if(a<b){t=a;a=b;b=t;} printf("%5.2f,%5.2f",a,b); }请问这样的程序如何比大小,我有点看不懂,尤其是){t=a;a=b;b=t;}这一部分不懂,