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#include

intmain()

{

chardigtal[20];

intcount = 0;

inti;

intnum;

scanf(＂%d＂,&num);

while( num )

{

digtal[count]= num % 10;

num /= 10;

count ++;

}

printf（＂输入%d， 共%d位\n＂, num,count）;

for(i = count - 1; i >= 0 ; i--)

printf(＂%d＂,digtal[i]);

return0;

}