Appending to a String Array

How would I append to the first element of a string array? So suppose I have this:

Code:

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char *array[ 10 ];

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Indexes 0-3 contain strings. The rest are empty. How do I create a function that reads every index in the array and writes to the first empty one?

I don't get it. You described the problem and a method for solving it.

Read every index in the array and write to the first empty one.

What, do you want us to code it for you?

You misunderstand what I'm asking. I want to know how I'd do this. What string function is appropriate for this sort of thing? Would I use strlen to test whether it's empty?

When creating the array set empty slots to NULL, then when searching for a space to write too just search for NULL.

Thanks, I'll try it.

[EDIT] Worked! Thanks, Valaris. Silly me for not thinking of something as simple as that...

np. Heres a simple example anyways.

Code:

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#include <stdio.h>
#include <string.h>

void fillPrint(char ** testing);

int main()
{
char * test[10];
memset(test, 0, 10);
test[0] = "Hi";

fillPrint(test);
}

void fillPrint(char ** thesting)
{
int i;
for ( i = 0; i <10 && thesting[i] != 0; i++)
{
printf ("&#37;s\n", thesting[i]);
}
thesting[i] = "sup";
printf("%s\n", thesting[i]);
}

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This example will need some array bound checking if it is going to really be used when adding strings.

Better make that const char to avoid silly mistakes as modifying it when no memory is actually allocated.
That or actually allocate memory first.
I'd also make a constant with the array size and re-use that instead of magic numbers.

> memset(test, 0, 10);
How many bytes does a pointer have?
And how is it represented?