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[英]Why is data corrupt when reading back from a file as it's being written with O_DIRECT
[英]data written to text file is partially corrupt and irretrievable
template <class T>
void savetext(T *a, char const *b) //writes to text file inside .sln however the text file is corrupt
{
ofstream fout(b, ios::out);
for (int i = 0; a[i] != '\0'; i++)
fout << a[i] << endl;
cout << "Text file successfully written to." << endl;
}
template <class T>
void gettext(T *a, char const *b) //this is where the error occurs: inside the text file it puts the right values along with piles of junk. Why is this?
{
ifstream fin(b, ios::in);
if (fin.is_open())
{
cout << "File opened. Now displaying .txt data..." << endl;
for (int i = 0; a[i]!= '\0'; i++)
{
fin >> a[i];
}
cout << "Data successfully read." << endl;
}
else
{
cout << "File could not be opened." << endl;
}
}
int main()
{
const int n1 = 5, n2 = 7, n3 = 6;
int a[n1], x, y, z;
float b[n2] = {};
char c[n3] = "";
//Begin writing files to text files which I name herein.
cout << "Writing data to text 3 text files." << endl;
savetext(a, "integer.txt");
savetext(b, "float.txt");
savetext(c, "string.txt");
cout << endl;
//Retrieve the text in the files and display them on console to prove that they work.
cout << "Now reading files, bitch!" << endl;
gettext(a, "integer.txt");
gettext(b, "float.txt");
gettext(c, "string.txt");
cout << endl;
return 0;
system("PAUSE");
}
你好,晚上好。 我有一個C ++程序,當前正在將數據(整數,浮點數和字符)寫入3個單獨的文本文件。 但是,當它將數據寫入文本文件時會發生兩件事:數據在文本文件中,但是一堆難以理解的翼文本和大數字和大的負數 - 我從未輸入過的數據。
結果, 我無法從文本文件中檢索信息,我無法顯示文本文件的信息。 我該如何解決這個問題? 謝謝。
您的第一個問題是您正在將未初始化的數據寫入文件。
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