三個數按大小順序輸出

#include <stdio.h>

int main()
{
int a = 0;
int b = 0;
int c = 0;
scanf("%d%d%d",&a, &b, &c );
if (a < b)
{
int tmp = a;
a = b;
b = tmp;
}
if (a < c)
{
int tmp = a;
a = c;
c = tmp;
}
if (b < c)
{
int tmp = b;
b = c;
c = tmp;
}
printf("%d%d%d\n", a, b, c);

return 0;

}