wrote this program for Calculate the area of the circle but wants The answer will be

wrote this program for Calculate the area of the circle program ready working but wants The answer will be displayed on The answer will be displayed
on the New DOS screen Who can help me؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟ ؟؟؟؟



program is ready working so just tell me what function must be use to
answer will be displayed on the new DOS screen only:

Code:

---

#include <stdio.h>
#include <conio.h>

float area(float);
int main()
{
float r, s;
clrscr();
printf("press enter to program start:");
getchar();
printf("\nenter the radius:");
scanf("%f", &r);
s = area(r);
printf("\narea = %5.2f", s);
getch();
return 0;
}
//***********************
float area(float r)
{
float s;
s = r * r * 3.14;
return s;
}

---

What does "new DOS screen" mean?

DOS only has one screen, and that's the one your program is running in.

You mean you want your answer on a new window? There's probably a system call for that, one of the guys here can probably be of more help.
An alternative could be to clear the screen though, In windows that can be easily achieved by calling system("CLS"). You probably need to include <stdlib.h> to use it though.

Of course, there was only one screen under MS-DOS, but for example one could programming windows with the graphics library that came with QuickC 2.5 a little bit a la Windows. One could create a kind of Windows with it. Like this example (I have tried install MS-DOS 6.22 and Windows 3.1/95 in the VBox - it would not work):

Attachment 15606

That are four windows on top of each other and every window is/was separate. It's modelled with Photoshop now.

That is a part of the code . . .

Code:

---

/* 'kkuprzan.c' gehört zu KREDITEX.C                                  */
/* Kurs einer jährlichen Annuitätenschuld mit Prozentannuitäten S.227 */
/*                                                      - 24. 9.1996 */
/*====================================================================*/


#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
#include <graph.h>


#define CURSOR_AUS 0x2000
#define CURSOR_NORMAL 0x0707


extern void kurs_jaehrl_prozent_annuschuld( void );
extern void kapital_effektiv_zins_menu( void );


void kurs_pannu( double nominal_zins, double effektiv_zins, double p_annu );


void kurs_jaehrl_prozent_annuschuld( void )
{
    int vg_farbe, i, spalte;
    int azeile, aspalte, ezeile, espalte;
    unsigned int hg_farbe;
    double effektiv_zins, nominal_zins, prozent_annu;
    char puffer[64];


    hg_farbe = _getbkcolor();
    vg_farbe = _gettextcolor();
    _gettextwindow( &azeile, &aspalte, &ezeile, &espalte );
    //I think that was ist . . .

    _setbkcolor( 15L );
    _clearscreen( _GCLEARSCREEN );
    _settextcolor( 14 );
    _settextposition( 2, 8 );
    _outtext( "Kurs einer Annuitaetenschuld mit jaehrlicher Zinszahlung und Tilgung" );
    _settextposition( 3, 24 );
    _outtext( "bei Tilgung durch Prozentannuitaet" );
    . . .
}

---

Quote:

---

Originally Posted by Dren

You mean you want your answer on a new window? There's probably a system call for that, one of the guys here can probably be of more help.
An alternative could be to clear the screen though, In windows that can be easily achieved by calling system("CLS"). You probably need to include <stdlib.h> to use it though.

---

yes want program answer on a new DOS screen show please more about system("CLS") and <stdlib.h> about new dos screen details tell me???

Quote:

---

Originally Posted by Salem

What does "new DOS screen" mean?

DOS only has one screen, and that's the one your program is running in.

---

code exist and like this >>>
include <stdlib.h>
.
.
.
system("dir C:\");
system("cmd.exe /c dir c:\");

("CLS") i think for clear screen i think this kind code must be use if you know complete its and put this post :

include <stdlib.h>

system("dir C:");
system("cmd.exe /c dir c:");
printf("\narea = %5.2f", s);

I suppose you could do
system("cmd.exe /c echo this is a string");

But it's a sucky way of printing things.
For a start, you need to figure out how to stop the new window from disappearing almost immediately.