C Scrolling

This is a discussion on C Scrolling within the C Programming forums, part of the General Programming Boards category; I'm suppose to make a prog that displays a bunch of stuff in table form, but the amount of colums ...

  1. #1
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    Lightbulb C Scrolling

    I'm suppose to make a prog that displays a bunch of stuff in table form, but the amount of colums is larger than the width of the screen, how do I put in a scroll bar or something like that so I can move left and right? (A vertical one might be nice too ) All of the table data is generated by a loop too btw, with the tables "headings" outside the loop and some info at the bottom.

  2. #2
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    The closest thing I can think of right now is ncurses library on UNIX.

    HTH,
    $ENV: FreeBSD, gcc, emacs

  3. #3
    ATH0 quzah's Avatar
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    Code:
    char buf[BUFSIZ] = {0};
    char out[BUFSIZ] = {0};
    int xposition = 0;
    
    sprintf( buf, some_stuff, some_args );
    strncpy( out, buf+xposition, 78 );
    printf("%s\n", out );
    That'd work for a quick hack. Put it in a loop.

    Quzah.
    Hope is the first step on the road to disappointment.

  4. #4
    Been here, done that.
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    Re: C Scrolling

    Originally posted by Hexxx
    I'm suppose to make a prog that displays a bunch of stuff in table form, but the amount of colums is larger than the width of the screen, how do I put in a scroll bar or something like that so I can move left and right? (A vertical one might be nice too ) All of the table data is generated by a loop too btw, with the tables "headings" outside the loop and some info at the bottom.
    I think what you are really asking is how to increase the size of your window, which will automtically add scroll bars if it's larger than the screen. If so, which OS?
    Definition: Politics -- Latin, from
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  5. #5
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    Well I just started coding, so I guess it for a console thingy or Dos\Windows.

  6. #6
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    Did I mention that I only started Comp Sci a couple weeks ago? I don't get most of how to even start to do what you're taking about. Maybe posting the code might help make it easier.
    Code:
    #include <stdio.h>
    #include <conio.h>
    void main () {
    	FILE *indata=fopen("c:\\cs10e\\input3.txt", "r");
    	FILE *outdata=fopen("C:\\cs10e\\output3.txt", "w");
    	
    	int lines=0, prt_num, prc_brk_quant, quant_sold, peakprt=9999, peaksale=0;
    	float init_amt, unit_prc, brk_discount, grand_discount, post_brk_discount, net_pay, total_discount;
    	
    	clrscr();
    	if (indata==NULL) {
    		printf ("No data file found!");
    		getch();
    		exit();
    		          }
    	fscanf (indata,"%d", &prt_num);
    	printf ("===============================================================================\n");
    	printf ("Part_No. Unit_Price Price_Break_Quant Quant_Sold Initial_Amt Discount   Net_Pay\n");
    	printf ("===============================================================================\n");
    	fprintf (outdata,"===============================================================================\n");
    	fprintf (outdata,"Part_No. Unit_Price Price_Break_Quant Quant_Sold Initial_Amt Discount   Net_Pay\n");
    	fprintf (outdata,"===============================================================================\n");
    	while (prt_num!=9999) {
    			fscanf (indata,"%f", &unit_prc);
    			fscanf (indata,"%d", &prc_brk_quant);
    			fscanf (indata,"%d", &quant_sold);
    		
    			if (quant_sold>peaksale) {
    				peakprt=prt_num;
    				peaksale=quant_sold;}
    			init_amt=unit_prc*quant_sold;
    			
    			if (quant_sold>=prc_brk_quant) {
    				brk_discount=0.1*init_amt;
    				post_brk_discount=init_amt-brk_discount; }
    			else {
    				brk_discount=0.00;
    				post_brk_discount=init_amt-brk_discount; }
    
    			if (post_brk_discount>1000.00) {
    				grand_discount=.05*post_brk_discount;
    				net_pay=post_brk_discount-grand_discount;}
    			else {
    				grand_discount=0.00;
    				net_pay=post_brk_discount-grand_discount;}
    		
    		total_discount=brk_discount+grand_discount;
    		fprintf (outdata,"%7d %11.2f %17d %10d %9.2f %9.2f %10.2f\n",prt_num, unit_prc, prc_brk_quant, quant_sold, init_amt, total_discount, net_pay );
    		printf ("%7d %11.2f %17d %10d %9.2f %9.2f %10.2f\n",prt_num, unit_prc, prc_brk_quant, quant_sold, init_amt, total_discount, net_pay );
    		lines++;
    		fscanf (indata,"%d", &prt_num);	}
    	printf ("-------------------------------------------------------------------------------\n\n");
    	printf ("Total number of data lines = %d\n", lines);
    	printf ("The highest quantity sold is Part No. %d, with %d sells\n", peakprt, peaksale);
    	fprintf (outdata,"-------------------------------------------------------------------------------\n\n");
    	fprintf (outdata,"Total number of data lines = %d\n", lines);
    	fprintf (outdata,"The highest quantity sold is Part No. %d, with %d sells\n", peakprt, peaksale);
    	fclose(indata);
    	fclose(outdata);
    	}
    It's suppose to read some data (4 numbers) from a file for each "part" and list them and do some basic calculations, but I think I might have to add another column and there isn't space on the screen.
    The data is suppose to be four numbers and stop reading when there is a fake part no. called 9999
    Example data file>>

    45 78 54 65
    1 2 3 6
    9999

  7. #7
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    anyone?

  8. #8
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    Don't bump your threads, read the forum Guidelines .

    >> I guess it for a console thingy or Dos\Windows.
    At your current level of programming, you don't have control over the window environment you're running in. Windows Consoles are hard to work with when it comes to resizing and smaller fonts etc.

    My advise is to change the output your program produces to make it fit the current screen size.

    >>void main ()
    http://faq.cprogramming.com/cgi-bin/...&id=1043284376
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  9. #9
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    Not sure if this is exactly what you are looking for but try these libaries

    curses.h (linux), conio.h(windows)
    Last edited by Aiursrage2k; 10-13-2003 at 03:01 PM.

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