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题目：一个5位数，判断它是不是回文数。即12321是回文数，个位与万位相同，十位与千位相同。　　　

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1.程序分析：同29例
2.程序源代码：
main( )
{
long ge,shi,qian,wan,x;
scanf("%ld",&x);
wan=x/10000;
qian=x%10000/1000;
shi=x%100/10;
ge=x%10;
if (ge==wan&&shi==qian)/*个位等于万位并且十位等于千位*/
　printf("this number is a huiwen\n");
else
　printf("this number is not a huiwen\n");
}