选择a,b,c的大小

#include <stdio.h>
int main()
{int a,b,c,d;
while(scanf("%d %d %d",&a,&b,&c)!=EOF){
if(a<b){d=a,a=b,b=d;}
if(a<c){d=a,a=c,c=d;}
if(b<c){d=b,b=c,c=d;}
printf("%d %d %d",a,b,c);}
return 0;
}