當我用C++寫了一個名爲「lotto.cpp」的小樂透程序時,我發現了一些非常奇怪的東西。一切都很好,直到我爲我的程序編寫寫入文件。當我編譯時,它給我以下錯誤:爲什麼源文件的名稱會影響編譯?
ld: can't open output file for writing: lotto, errno=21 for architecture x86_64
collect2: ld returned 1 exit status
巧合的是,我改變了我的程序的名稱爲「1.cpp」,並突然就沒有問題彙編。當我將名稱更改爲「test.cpp」時,它也起作用。
我真的很好奇爲什麼發生這種情況。有任何想法嗎?
這發生在MacBook Pro上。
如果你想要的代碼,請讓我知道!
我知道有些人要求輸入密碼。它是:
#include <iostream>
#include <fstream>
using namespace std;
const int NED = 10;
const int VIKING = 6;
const int NORMAL = 7;
const int MAX = 10;
void quickSort(int arr[], int left, int right);
int checkDuplicates(int arr[], int length);
int main (int argc, const char *argv[])
{
int i, j, k, ans;
char ans2;
int lottoNumbers[MAX];
ofstream out("Lotto.txt", ios::out | ios::app);
srand((unsigned)time(NULL));
do
{
do
{
cout << "\n\nDo you want to play Viking Lotto (press 6), or normal Lotto (press 7): ";
cin >> ans;
}while(ans != VIKING && ans != normal);
(ans == VIKING) ? cout << "\nViking Lotto:\n" : cout << "\n\nnormal Lotto:\n";
(ans == VIKING) ? out << "\nViking Lotto:\n" : out << "\n\nnormal Lotto:\n";
for (i = 0; i < NED; i++) //10 rows
{
for (j = 0; j < ans; j++) //6 or 7 columns
{
(ans == VIKING) ? lottoNumbers[j] = (rand() % 48) + 1 : lottoNumbers[j] = (rand() % 34) + 1;
}
if(checkDuplicates(lottoNumbers, ans) != -1)
{
for(k = 0; k < ans; k++)
{
while(checkDuplicates(lottoNumbers, ans) == lottoNumbers[k])
{
(ans == VIKING) ? lottoNumbers[k] = (rand() % 48) + 1 : lottoNumbers[k] = (rand() % 34) + 1;
}
}
}
quickSort(lottoNumbers, 0, ans - 1);
cout << '\n';
for(j = 0; j < ans; j++)
{
cout << lottoNumbers[j] << '\t';
out << lottoNumbers[j] << '\t';
}
out << '\n';
}
cout << "\n\n";
cout <<"Another lottery ticket (Y/N) ";
cin >> ans2;
}while(ans2 == 'j' || ans2 == 'J');
cout << "\n\nLOTTO NUMBERS WAS WRITTEN TO FILE...\n\n";
return 0;
}
void quickSort(int arr[], int left, int right)
{
int i = left, j = right;
int tmp;
int mid = arr[(left + right)/2];
while (i <= j)
{
while (arr[i] < mid) i++;
while (arr[j] > mid) j--;
if (i <= j)
{
tmp = arr[i];
arr[i] = arr[j];
arr[j] = tmp;
i++;
j--;
}
};
if (left < j) quickSort(arr, left, j);
if (i < right) quickSort(arr, i, right);
}
int checkDuplicates(int arr[], int length)
{
for(int i = 0; i < length; i++)
{
for(int j = i + 1; j < length; j++)
{
if(arr[i] == arr[j]) return arr[j];
}
}
return -1;
}
請給出代碼。它看起來像你正在編輯一個沒有權限的文件。 – beta0x64 2012-02-08 20:02:38
此外,請提供您的目錄結構(內部目錄和文件的名稱) – beta0x64 2012-02-08 20:06:30
'/ usr/include/sys/errno.h'中的錯誤21是'EISDIR',你是否試圖寫入目錄? – Gaius 2012-02-08 20:04:24