Integer large mirror on the wall

Description questions
entered by the keyboard a three positive integer n. The mirror arrangement order of three numbers disrupted recombining a new three positive integers, so that the maximum value. Please help mirror the output value.
Input
enter a positive integer n, and 100 <= n <= 999.
Outputting
an output in accordance with requirements of the subject.
Examples of input
296
output example
962
data range
to 100% of the data, 100 <= n <= 999

#include"stdio.h"

void main(int argc, char* argv[])
{
	int n,a,b,c,m1,m2,m3,x;
	scanf("%d",&n);
    a=n/100;
    b=n/10%10;
	c=n%10;
	if(a>=b&&a>=c)
	  if(b>=c)
		  m1=a,m2=b,m3=c;
	  else
		  m1=a,m2=c,m3=b;
	else
	  if(b>=a&&b>=c)
		  if(a>=c)
			  m1=b,m2=a,m3=c;
		  else
			  m1=b,m2=c,m3=a;
	  else
		  if(a>=b)
			  m1=c,m2=a,m3=b;
		  else
			  m1=c,m2=b,m3=a;
	x=m1*100+m2*10+m3*1;
    printf("%d",x);
}