#include int main() {int n,a,b,c;printf("请输入一个3位数:");scanf("%d",&n);a=n/100;b=n/10%10;c=n%10;if(b>a){n=a;a=b;b=n;}if(c>a){n=a;a=c;c=n;}if(c>b){n=b;b=c;c=n;}printf("%d%d%d\n",a,b,c);return 0;}