संपूर्ण ASCII फ़ाइल को C++ std::string . में पढ़ें

यह पूरी ASCII फाइल को C++ में std::string में पढ़ने का एक आसान तरीका है -

एल्गोरिदम

Begin
   Declare a file a.txt using file object f of ifstream type to perform read operation.
   Declare a variable str of string type.
   If(f)
      Declare another variable ss of ostringstream type.
      Call rdbuf() fuction to read data of file object.
      Put the data of file object in ss.
      Put the string of ss into the str string.
   Print the value of str.
End.

उदाहरण

#include<iostream>
#include<fstream>
#include<sstream>
#include<string>
using namespace std;
int main() {
   ifstream f("a.txt"); //taking file as inputstream
   string str;
   if(f) {
      ostringstream ss;
      ss << f.rdbuf(); // reading data
      str = ss.str();
   }
   cout<<str;
}

इनपुट

a.txt data file containing the text “hi”

आउटपुट

hi