Thread: chalanging programing to solve

ok i wanted to enter a surname that can only fits 20 character...
but if some one enters more then 20 character, it would just read the first 20 character that is written, when it is printed out...but the character after the 20th one, will not be written anywhere and as a matter of fact, i don't want it to affect the rest of the program...

this is what i have so far...

Code:

#include <stdio.h>

int main(int argc, char ** argv)
{
// Mainline Variable Declarations
FILE * output = stdout;
FILE * input = stdin;

char * LName[20];

			{
			//Enter last name
			fprintf(output,"--------------------------\n"); fflush(output);
			fprintf(output,"Enter Your last name(maximum of 20 letters): "); fflush(output);

			//input last name
			fscanf(input,"%20s%*c",&LName);fflush(output);
			}
//output

	fprintf(output," %s",LName);

Originally Posted by quzah

"
Is there any particular reason you're aliasing stdin and stdout?
Quzah.

yeah there is a reason, its part of the thing i have to do...
so yeahh...
but i don't really understand what you mean..can you explain in more detail...
thank you

You might want to look at C String tutorial first, then you'll know the difference between "char var[]", "char *var" and "char *var[]".

There's also an example that uses fgets() to read a string of maximal size 256, you can easily modify it to read only 20 characters.

Originally Posted by KONI

You might want to look at C String tutorial first, then you'll know the difference between "char var[]", "char *var" and "char *var[]".

There's also an example that uses fgets() to read a string of maximal size 256, you can easily modify it to read only 20 characters.

i know the difference between "char var[]" "char *var" and "char *var[]"
and have tried fgets, but it stills deosn't work, and plus i m not suppose to use that...

Originally Posted by Salem

>
The %*c reads (and throws away) the next character (only).

yeah i put that in because it also reads out the enter button when i press enter, so its suppose to read enter button and erase it..

Originally Posted by j4k50n

... its suppose to read enter button and erase it..

get away from my keyboard !