7.txt
今天朋友给了一段程序，写入一个7.txt文件。明明就是0， 1， 2加空格，但是用notepad打开就是显示怪怪的东西，好奇怪。用ultraeditor打开正常显示啊。
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这段代码:
#include <iostream>
#include <cstdio>

using namespace std;
int arr[1000000];

//typedef long long __int64 ;

void test(__int64 c)
{
        if(c % 2)   // 周长必须是偶数
                return;
        for(int m=2; m*m<=c/2; ++m)
        {
                for(int n=1; n<m; ++n)
                        if(m*(m+n) == c/2)
                                arr[c]++;
        }
}

int main()
{
        freopen("7.txt", "w", stdout);
        for(__int64 i=3; i<=500; ++i)
                test(i);
        for(__int64 i=3; i<=500; ++i)
                printf("%d ", arr[i]);
        return 0;
}

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• 7.txt （0.97kb，4次下载）