Question

Does C++ have access to infile data through a filehandle? For example the typical idiom in Perl is:

while (<DATA>) {   chomp;   # do sth with $_ }  __DATA__ Foo Bar 

What’s the way to do that in C++ ?

Answer 1

I wouldn’t say it’s idiomatic as I’ve never seen it in any C++ code, but you can use C++ string stream and C pre-processor string pasting to treat a multi-line string as an input stream:

#include <sstream> #include <iostream>  using namespace std;  const string data =      'once upon a time, ' \     'a young lass called Goldilocks\n' \     'went for a walk in the forest.\n';  int main () {     istringstream in (data);      for (string line; getline(in, line); )          cout << line << endl;      return 0; }