数字排列

#include<stdio.h>

int main()
{
int x;
scanf("%d",&x);
int mask = 1;
int t = x;
while (t > 9 )
{
t /=10;
mask *=10;
}
do {
int d = x / mask;
printf("%d",d);
if ( mask > 9 )
{
printf(" ");
}
x %= mask;
mask /=10;
}while (mask > 0);
printf("\n");
return 0;
}