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");
}
您好,晚上好。我有一个C++程序,目前正在将数据(整数,浮点数和字符)写入3个单独的文本文件。然而,当它将数据写入文本文件时,会发生两件事情:数据在文本文件中,但是也有一些不可理解的动态文本和大量数字以及大量负数 - 我从未输入数据。写入文本文件的数据部分损坏且无法挽回
因此,我无法从文本文件中检索信息,也无法显示文本文件的信息。我该如何解决这个问题?谢谢。
正在使用std :: vector而不是静态数组ok吗?如果程序从文件中读取可变数量的字节,动态分配的容器(如std :: vector)比只能保持固定数量字节的静态数组要好。由于文件大小可能比可用内存大,因此从硬盘读取文件时处理文件是个不错的主意。这样可以避免将文件中的所有数据同时存储到内存中。如果您跨平台,还必须考虑排序和Unicode编码。 –