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Hi , I am new to C programming and have only basic knowledge about it, I just want to ask you guys if you knew how to limit, for example, the number of inputs a user can input.
To make my point clear I'll give an example,
If I make a program that asks you a name, how can i limit your inputted letters to ,say, 5 letters only?
Is it possible through simple coding? thnx and a pleasant day to you all.
>Is it possible through simple coding?
Yes, but it's not portable. You'll need to provide your compiler and OS so that we can suggest non-portable options for directly controlling keyboard input.
wow tnx for the fast reply.
So it is posible :). But what do you mean by controlling the keyboard input?
Im using a c compiler from Borland, and im using windows XP.
I was wondering if you could post a simple code about asking the user to input a 2 digit number (like 01 - 99) but wouldnt let you input 3 numbers.
Thanks for replying again and sorry if i am asking for a code, I really cant understand it if i wouldnt see it in action, primarily because I cant understand english well coz im from philippines sorry bout that. I'll understand if it's not allowed tnx again!
> Im using a c compiler from Borland
Not Turbo C surely?
yeah turbo C++, thnx for pointing that one out ! :)
> Im using a c compiler from Borland, and im using windows XP.
Buy new Ferrari.
Replace engine with elastic band.
You've just reduced your machine to one with 640K of memory, and you've sliced the processor in half.
Your compiler is so old it was used by the Druids to build Stonehenge!.
Try belonging to this millenium by using a more up to date compiler. There are many excellent and free compilers to choose from nowadays without having to use that old piece of museum tat.
lol :) can you suggest a good compiler man?
http://www.compilers.net/Dir/Free/Compilers/CCpp.htm
- Borland C++ Compiler 5.5
- Bloodshed Dev-C++
- Cygwin Project (C/C++)
- Digital Mars C and C++ Compilers
- DJGPP
- MingW
- Watcom C++
All of these would be fine choices. A lot of people go for dev-c++, as you get an editor and debugger as well, all in a single file download (easy to install).
There's also visual studio express
http://en.wikipedia.org/wiki/Visual_Studio_Express
But you also need to download the platform SDK to make it useful.
Avoid like the plague the "Miracle C", it's even worse than the one you have already.
Code::Blocks is still in developement, but appears to have promise.
I've seen Dev-C++ but it only works on windows 9x and 2k and I got a windows XP.
I've also seen the other ones you recommended and I tried and liked the bloodshed one :)
Hey guys thanks for your help in finding a good compiler.
About my first question, do you guys know how to do this? because if I were to write a program, for example a program asking only 2 digit numbers, I could put as many numbers as I like.
Thanks again guys!
I use WXP on my laptop. I have Deb-C++, Code::Blocks, Turbo. . . etc. . .etc.Quote:
Originally Posted by chobibo
Banged, that shoots directly towards me.Quote:
Originally Posted by Salem
(I migrated to Visual C++ 2005 Express, + PSDK)
Im quite sure that chobibo is Filipino as well,
we have similar compilers before, fossil-like. (like what Mr. Quzah and Salem said)
You could read in a whole line of text at a time, then check if the text represents a two digit number. If it doesn't alert the user and ask him/her to re-enter the input. Try doing an online search for "fgets" and "sscanf" for C, and "std::getline" and "std::stringstream" for C++, or just check out the FAQ for examples.
You could limit the length of the string read in to five characters quite easily, but that doesn't prevent the user from typing more than that.Quote:
If I make a program that asks you a name, how can i limit your inputted letters to ,say, 5 letters only?
Code:#include <stdio.h>
#include <string.h>
int main(void) {
char name[6], *p;
int c;
printf("Enter your name: ");
fgets(name, sizeof(name), stdin);
if((p = strrchr(name, '\n'))) *p = 0;
while((c = getchar()) != '\n' && c != EOF);
printf("Hello, %s!", name);
return 0;
}
You can surely do this using ncurses, but this may require rewriting some of your code. PDCurses can be used on Windows, and it provides identical functionality as ncurses (look at the demos for PDCurses; they're quite impressive).
But I notice that you are beginner, so this maybe too complex of a suggestion.
Thanks for the code man, at least i have an idea of what to do. I guess I'll be studying C step by step instead of asking questions like that :). Thanks to you all.