#includemain(){floata，b，c，t;a=;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;}printf(“%.f，%.f，%.f”，a，b，c);//注意%.f的输出格式与逗号}