Building a string of characters

[LittleTim]

Hello everybody,

I'm a novice and I need to figure out how to build a strung using a series of characters. I want to read a file character by character and add each character to a string if the character is not white space.

I can use gerchar() to get each character but strcat only works with strings, it won't let me use a string and a character.

Can anyone shed some light on this for me?

Thanks!


Tim

[quzah]

Don't use strcat then. Or do use strcat! Either way, it'll be fine.

Not...

char buf[BUFSIZ] = {0}; /* <-- your string-to be */
int c; /* <-- The character you read. */
size_t s = 0; /* <-- The position in the array you're using. */

repeat until at the end of the file, or the string is full
{
    read a character
    if not whitespace
        put into array at 's' space, increment 's'
    else
        ignore it, ie: do nothing with it, don't increment 's'
}

Or do...

char buf[BUFSIZ] = {0};
char cat[2] = {0};
int c;

repeat blah blah
    read a character into 'cat[0]'
    strcat cat onto buf

Quzah.

[LittleTim]

Don't use strcat then. Or do use strcat! Either way, it'll be fine.

Not...

char buf[BUFSIZ] = {0}; /* <-- your string-to be */
int c; /* <-- The character you read. */
size_t s = 0; /* <-- The position in the array you're using. */

repeat until at the end of the file, or the string is full
{
    read a character
    if not whitespace
        put into array at 's' space, increment 's'
    else
        ignore it, ie: do nothing with it, don't increment 's'
}

Quzah.

I did forget to mention, that I need to be able to read stdin. Since input from stdin can be redirected from a file, I can use the above method (..and I already have coded one that works..) to read characters until EOF. But what if stdin is coming from the command line instead? Now my exit condition for the loop has to be that getchar()=='\n'. Obviously this method won't work for a file because it will only grab the first line of the file. Is there a way to write ONE function to handle stdin from both file redirection and the command line.

Thanks a lot!
tim