fstream eof
The second example works as inf >> foo will always return inf , with the side effect of attempt to read something and store it in foo . inf , in an if or while , will evaluate to true if the file is "good": no errors, no EOF. Thus, when a, You haven't reached EOF because the EOF mark hasn't been read yet ("binarically" speaking, its conceptual location is just after the 30 line). Therefore you carry on to the next ... ifstream iFile("input.txt"); // input.txt ha
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 fstream eof 相關參考資料
ahan's Blog: fstream::eof() 不能亂用
最近重新練習fstream 的用法，用到一半發現eof() 真的不能亂用。 eof() 是用來檢查是否已經超過檔案結尾的函式，但是他不能用來做讀入檔案的判別條件，像下面這樣用是會錯誤的：. while (!fstr.eof()). fstr>> rand [i];. i++;. } 因為eof() 是用來判別是否超過檔案結尾的函式，所以正常讀檔當讀到eof的時候，結果仍然會 ... http://iamahan.blogspot.com c++ - How does ifstream's eof() work? - Stack Overflow
The second example works as inf >> foo will always return inf , with the side effect of attempt to read something and store it in foo . inf , in an if or while , will evaluate to true if the fi... https://stackoverflow.com c++ - Reading from text file until EOF repeats last line - Stack ...
You haven't reached EOF because the EOF mark hasn't been read yet ("binarically" speaking, its conceptual location is just after the 30 line). Therefore you carry on to the next ...... https://stackoverflow.com C++ fstream: throwing exception when reaching eof - Stack Overflow
The basic problem in your code is a FAQ. You should never use eof() as a test condition of a read loop because in C/C++ (unlike some other languages) eof() is not set to true until you have read past... https://stackoverflow.com do while, while, and eof - C++ Forum - Cplusplus.com
... #include <fstream> using namespace std; int main() ifstream inFile; inFile.open( "prog8Data.txt" ); char next = 'a' ; do while (next != '-n' ) inFile.get(next); c... http://www.cplusplus.com fstream - eof problem c++ - Stack Overflow
If you change your loop to while(getline(infile,STRING)) cout<<STRING; }. you avoid the possibility of reading the last value twice (see this SO post). https://stackoverflow.com ifstream 流判断文件是否结尾的函数eof() - CSDN博客
fstream流的eof() 判断有点不合常理 按正常逻辑来说，如果到了文件末尾的话，那eof()应返回真 但是，c++输入输出流如何知道是否到末尾呢？ 原来是根据的是： 如果fin>>不能再读入数据了，才发现到了文件结尾，这时才给流设定文件结尾的标志，此后调用eof()时，才返回真。 假设 fin>>x; // https://blog.csdn.net ios::eof - C++ Reference - Cplusplus.com
ios::eof example #include <iostream> // std::cout #include <fstream> // std::ifstream int main () std::ifstream is( "example.txt" ); // open file char c; while (is.get(c)) // lo... http://www.cplusplus.com 〔教學〕C 及C++ 常犯錯誤- EOF 測試的錯誤用法 C++ 程式設計俱樂部
while ( fgets(line, sizeof(line), fp) ) printf("%s", line); } fclose(fp); } 不但正確, 而且更為簡潔. C++ 的讀數值例子: #include <fstream> #include <iostream> int main(void) std::fstream infile(... http://www.programmer-club.com |