You may have seen this error:
char string1[] = "Hello", string2[] = "Hello";
if (string1 == string2) ...
This condition fails because == for arrays compares memory addresses not contents, and the addresses differ.
This also causes problems:
string2 = string1;
It copies not string2’s contents, but its address, to string1. string1’s contents are lost. This is wasteful and also error-prone:
string2[1] = 'a'; // string1 becomes "Hallo", though it
// wasn't even mentioned here!
So let’s make our own string class, forcing the operators to do what we want, and never worry about this again.
