cpycstr

[jvqpDjzh]

Why does this work?

char* cpycstr(char* to, const char* from)
{
    while(*to++ = *from++);//it seems that to is resized, without having to reallocate
    return to;
}

char a[0];
const char* cptr = "Hello World!";
cpycstr(a, cptr);
std::cout << a ;

[keskiverto]

It doesn't work.

You are free to corrupt random memory locations just to see how hard a crash you will get.