[Dev-C++] c++ gnuplot

[Jorge G. <jor...@gm...>]

hi how write this in c++?, could i use <fstream>

this it´s ok, (c and gnuplot)
/******/
#include <stdio.h>
#include <stdlib.h>
#define GNUPLOT_PATH "D:/instaladores/gnuplot/gnuplot/bin/pgnuplot"
int main (int argc, const char * argv[]) {
 FILE *gp;
 gp = popen(GNUPLOT_PATH, "w");
 if(gp == NULL){
      fprintf(stderr, "Oops, I can't find %s.", GNUPLOT_PATH);
      exit(EXIT_FAILURE);
 }
 //fprintf(gp, "set term aqua title \"Function A\" \n");
 fprintf(gp, "set samples 2048 \n");
 fprintf(gp, "plot [-512:512] -abs(x*sin(sqrt(abs(x))))+400\n");
 fflush(gp);
 getchar();
 pclose(gp);
 return(EXIT_SUCCESS);
}
/**************/

i have a problem here:

/**************/
#include <cstdlib>
#include <fstream>
#include <iostream>
#define GNUPLOT_PATH "D:/instaladores/gnuplot/gnuplot/bin/pgnuplot"
using namespace std;
int main()
{

    fstream fSalida;

    fSalida.open(GNUPLOT_PATH,ios::out|ios::app );
//¿¿¿ :-)
  //  cout<<fSalida<<"set samples 2048"<<endl;
  //  cout<<fSalida<<"plot [-512:512] -abs(x*sin(sqrt(abs(x))))+400"<<endl;;
    system("PAUSE");
    return EXIT_SUCCESS;
}
/**************/