c++ - Readfile is not reading the the blank spaces from my text file? -

i reading in text file , have found not print blank characters between words. want read each character character @ time , print character output window. read read file not show blank spaces , have not been able find out why blank spaces being skipped.

question: why read not reading blank characters in test file?

when find blank character want print word blank space.

code:

#include "stdafx.h" #include "iostream" #include<iostream> #include<fstream>  void readtestfile() {     char ch;     std::fstream fin("c:/users/itpr13266/desktop/mytest.txt", std::fstream::in);     while (fin >> ch) {         std::cout << "letter: " << ch << std::endl;           if (ch == ' ')  <-- should catch blank spaces           {               std::cout << "blank space" << std::endl;           }           else  <-- write letter           {               std::cout << ch << std::endl;            }     } }  int _tmain(int argc, _tchar* argv[]) {    readtestfile();     getchar();    return 0; } 

test file:

  testing fprintf...   testing fputs... 

output

 letter: t  t  letter: h  h  ...etc... 

the standard input function istream::operator>>() skips leading whitespace before performing input. if need obtain spaces, there couple options can use:

• std::noskipws

  by setting std::ios_base::noskipws flag, stream not discard leading whitespace , ch given value of each consecutive character. note succeeds overload takes char (ch given value of space). other data type not work:

  while (fin >> std::noskipws >> ch) {     // ... } 

• std::istream::get()

  get() unformattedinputfunction function, , not parse input beforehand.

  while (fin.get(ch)) {     // ... } 

• std::istreambuf_iterator<>

  you can use iterators work directly buffer. std::istreambuf_iterator<> doesn't parse input:

  std::copy(std::istreambuf_iterator<char>{fin},           std::istreambuf_iterator<char>{},           std::ostreambuf_iterator<char>{std::cout},