Programming and Graphics

230 Introduction to C++ Programming and Graphics

...

//--- Prepare the graph:

...

//--- Draw axes:

...

//-----------------------------

if(Itry==1)

{

vexit();

goto again;

};

//-----------------------------

cout << "Press p to print a postscript file" << endl;

cout << " any other key to finish" << endl;

kbd = char(getkey());

if(kbd ==’p’)

{

char outfile[1];

cout << " Please enter the name of the postscript file " <<endl;

cin >> outfile;

cout << "Please enter:" << endl << endl;

cout <<" 1 for a black/white plot" << endl;

cout <<" 2 for a black/white plot in portrait" << endl;

cout <<" 3 for a color plot" << endl;

cout <<" 4 for a color plot with background color" << endl;

cout <<" 5 for a color plot in portrait" << endl;

cout <<" 6 for a color plot in portrait with background color" << endl;

short Iplot;

cin >> Iplot;

voutput (outfile);

if(Iplot==1) vnewdev("postscript");

if(Iplot==2) vnewdev("ppostscript");

if(Iplot==3) vnewdev("cps");

if(Iplot==4) vnewdev("cps");

if(Iplot==5) vnewdev("pcps");

if(Iplot==6) vnewdev("pcps");

Itry = 1;

goto repeat;

}