fun with casting

[jimboBrown]

Hello All,

I'm trying to do a simple c program that will squish together several char arrays to create one large char array.

I'd like to be able to take "abc" "defg" "hijk" and create "abcdefghij k".

Here's what I have so far:

void squishChars(cha r *final, char *array ){

int i;
for (i=0; array[i]; i++){
strcat(final, array[i]);
}

}

final is the resulting squished char array ( in my example "abcdefghij k" )
array is similar to the following
const char *letters[] = {
"abc",
"defg",
"hijk",
NULL
};

When I attempt to compile, these are the errors I'm getting:
warning: passing arg 2 of `strcat' makes pointer from integer without a cast
warning: passing arg 2 of `squishChars' from incompatible pointer type

Running causes major trouble... a Status Access Violation.

I realize I need to cast array[i] as a char array, but I'm not sure how to do it... any ideas?

Thanks in advance!

- JB

[horace1]

the destination for strcat() should be a char[] (not const) with sufficent room for the concatenated characters. e.g.

#include <stdio.h>
#include <string.h>
 
void squishChars(char *final, char *array[] ){
int i;
for (i=0; array[i]!=NULL; i++)
    strcat(final, array[i]);
}
 
int main()
{
     const char *letters[] = {"abc","defg","hijk",NULL};
     char output[50]="xyz";
     squishChars(output, letters);
     printf("%s\n", output);
     system("pause");
}
 

when run gives
xyzabcdefghijk