\documentclass{article}
\usepackage{tikz}
\usepackage[americanresistors,americaninductors]{circuitikz}
 
\begin{document}
\begin{circuitikz}
\draw(0,0)--(1,0)node[ground]{};
\end{circuitikz}
\end{document}
 

//02/21/11 Julian Glatzer ­ ROOT Einführung 27
//Einlesen von Daten
 
#include <iostream>
#include <fstream>
 
void lesen_3(){
  gROOT->Reset();
  gROOT->SetStyle("Plain");
  ifstream in;                                 //Input Stream
  in.open("peaks.dat");                        //Oeffnen der Datei
  Float_t xi;
  Int_t nlines = 0;
  TH1F* _histo = new TH1F("_histo","Peaks", 15, 0., 15 );
  while( ! in.eof() ){                          //Bis zum Ende der Datei   
  cout << 1  << endl;
    if(in >> xi){                              //Einlesen einer Zeile
	cout<< 2 <<endl;
      _histo->SetBinContent( nlines, xi );     //Setzen des Bin Inhalts
      nlines++;
      cout << nlines << ": " << xi <<endl;
    }
  }
  cout<<"found "<<nlines<<" data points"<<endl;
  in.close();
  _histo->Draw();
}