利用C++编程,比较由键盘输入的三个数大小,并按从小到大依次输出,请问如何实现?

#include using namespace std;void main(){ int a, b, c; int t; couta>>b>>c; if(a > b) {t = a; a = b; b = t; } if(a > c ) {t = a; a = c; c = t; } if( b > c) {t = b; b = c; c = t; } cout