symmetry.cpp

输入一个长整数,不使用字符转换,检查是否为对称数, 是显示 TRUE,否显示FALSE.

/**
 功能: 输入一个长整数,不使用字符转换,检查是否为对称数, 是显示 TRUE,否显示FALSE.
	main函数是测试.
author: wxfly
**/
#include<iostream.h>
#define TRUE 1
#define FALSE 0
int fun(unsigned long uNumber);

main() //test function fun()
{
	unsigned long a[10] = {3,23,523, 2222, 12321, 234432,
			3456543, 14566541, 213585312, 1285435821};

	for( int k = 0; k < 10; k ++)
		if( fun(a[k]) )
			cout<<"\n"<<a[k]<<" TRUE."<<endl;
		else
			cout<<"\n"<<a[k]<<" FALSE."<<endl;

	return 0;
}

int fun(unsigned long uNumber)
{
	int  i,  array[10]={0};
	unsigned long uK = 1;

	for(  i = 0; i < 10; i ++)
	{
		array[i] = (int)((uNumber%(uK*10))/uK);
		uK *= 10;
	}

	for( i = 10; i > 0; i --)
		if( array[i -1] != 0)
			break;

	for(int j = 0; j < i/2; j ++)
    {
		if(array[i-1-j] != array[j])
			return FALSE;
	}

	return TRUE;
}