Writes formatted data into memory - C++ File Stream

C++ examples for File Stream:stream

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Description

Writes formatted data into memory

Demo Code

#include <strstream>
#include <iostream>
#include <iomanip>                  //for setiosflags()
using namespace std;
const int SIZE = 80;                //size of memory buffer
int main()/*from ww  w .ja va2s .com*/
{
   char ch = 'x';
   int j = 77;
   double d = 67890.12345;
   char str1[] = "Kafka";
   char str2[] = "Freud";
   char membuff[SIZE];              //buffer in memory
   ostrstream omem(membuff, SIZE);  //create stream object
   omem << "ch=" << ch << endl      //insert formatted data
   << "j=" << j << endl        //into object
   << setiosflags(ios::fixed)  //format with decimal point
   << setprecision(2)          //two digits to right of dec
   << "d=" << d << endl
   << "str1=" << str1 << endl
   << "str2=" << str2 << endl
   << ends;                    //end the buffer with '\0'
   cout << membuff;                 //display the memory buffer
   return 0;
}

Result


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