C appending char to char*

Question

So I\'m trying to append a char to a char*.

For example I have char *word = \" \"; I also have char ch = \'x\';

Answer 1

It is hard to append to a string in-place in C. Try something like this:

char *append(const char *s, char c) {
    int len = strlen(s);
    char buf[len+2];
    strcpy(buf, s);
    buf[len] = c;
    buf[len + 1] = 0;
    return strdup(buf);
}

Be sure to deallocate the returned string when done with it.

FYI: It segfaults probably because the string you are passing is stored in read-only memory. But you're right, you are also writing off of the end (the [len+1] write, not the [len] one).