main(){inta,b,c,t;printf("\npleaseinputthreenums\n");scanf("%d%d%d",&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("\npaixuhou:%d\t%d\t%d\n",a,b,c);}转载的,这是很简单的小东西,网上有很多。