Re: [fpc-pascal] Cancelling Scientific notation
Hallo all, Thank you for all the answers I have received. Some more stupid questions please: 1. How can I get fpc to use a comma (,) in stead of a period (.) as the separator between whole number and fraction? 2. The window showing the program listing on the screen is rather mall. How do I enlarge it to show more lines? I tried clicking and ragging but nothing works. 3. I want to print the program listing. I click on Files, print and nothing happens. The device is shaown as lst or prn. How do I fix that? Thanks again. James Gibbens - Original Message - From: Marco van de Voort mar...@stack.nl To: FPC-Pascal users discussions fpc-pascal@lists.freepascal.org Sent: Tuesday, January 26, 2010 11:23 PM Subject: Re: [fpc-pascal] Cancelling Scientific notation In our previous episode, James Gibbens said: Good evening Frank, Thank you very much for your answer. The Writeln(y:0:2); works beautifully. The backgroundcolor is solved as far as the text goes, but the rest is still black. What is the whole area cover by the program, the screen called? I still need to down load the help files - so if I am stupid, please say so. I am a retired MAths teacher and I want to make programs so that the learners(?) [earlier we called them pupils / students] can PRACTISE the Maths. clrscr; cleans the screen with the currently set fore- and background colors. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cancelling Scientific notation
Good evening Frank, Thank you very much for your answer. The Writeln(y:0:2); works beautifully. The backgroundcolor is solved as far as the text goes, but the rest is still black. What is the whole area cover by the program, the screen called? I still need to down load the help files - so if I am stupid, please say so. I am a retired MAths teacher and I want to make programs so that the learners(?) [earlier we called them pupils / students] can PRACTISE the Maths. Thanks again James - Original Message - From: Frank Peelo f...@eircom.net To: FPC-Pascal users discussions fpc-pascal@lists.freepascal.org Sent: Monday, January 25, 2010 8:53 PM Subject: Re: [fpc-pascal] Cancelling Scientific notation On 25/01/2010 18:37, James Gibbens wrote: Hallo FPC gurus, I am VERY new to free pascal and I have a couple of problems. Can somebody please help? 1. If a, b are real numbers and I want to round a/b foo to 3 decimal places, the answer is displayed in Scientific notation. How do I turn that off? Are you using Write and Writeln? For strings and integers, you can specify the field width, e.g. x := 'Hello'; Write(x:10); will write the variable x using at least 10 characters, using spaces for padding if necessary. For floating-point types you can also specify the decimal places, e.g. y := 12.345; Writeln(y:0:2); will write y using at least 0 characters, i.e. no padding at all, with 2 digits after the decimal point. 2. Without using Object Pascal, how can I change the background colour, a very black BLACK, when the program runs? It is strenuous on my poor eyes. That I'm not so sure of. There used to be a crt unit, so add CRT to the uses clause at the top of your program uses foo, bar, CRT, whatever; and then you could use textbackground(blue); textcolor(yellow); and like that. I guess it's still supported. Frank ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cancelling Scientific notation
In our previous episode, James Gibbens said: Good evening Frank, Thank you very much for your answer. The Writeln(y:0:2); works beautifully. The backgroundcolor is solved as far as the text goes, but the rest is still black. What is the whole area cover by the program, the screen called? I still need to down load the help files - so if I am stupid, please say so. I am a retired MAths teacher and I want to make programs so that the learners(?) [earlier we called them pupils / students] can PRACTISE the Maths. clrscr; cleans the screen with the currently set fore- and background colors. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cancelling Scientific notation
1) Format('%.3f', [A / B]);
2) It depends on you GUI framework/library, but in Delphi and Lazarus it
would be Color := 0;
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Re: [fpc-pascal] Cancelling Scientific notation
On 25/01/2010 18:37, James Gibbens wrote: Hallo FPC gurus, I am VERY new to free pascal and I have a couple of problems. Can somebody please help? 1. If a, b are real numbers and I want to round a/b foo to 3 decimal places, the answer is displayed in Scientific notation. How do I turn that off? Are you using Write and Writeln? For strings and integers, you can specify the field width, e.g. x := 'Hello'; Write(x:10); will write the variable x using at least 10 characters, using spaces for padding if necessary. For floating-point types you can also specify the decimal places, e.g. y := 12.345; Writeln(y:0:2); will write y using at least 0 characters, i.e. no padding at all, with 2 digits after the decimal point. 2. Without using Object Pascal, how can I change the background colour, a very black BLACK, when the program runs? It is strenuous on my poor eyes. That I'm not so sure of. There used to be a crt unit, so add CRT to the uses clause at the top of your program uses foo, bar, CRT, whatever; and then you could use textbackground(blue); textcolor(yellow); and like that. I guess it's still supported. Frank ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
