Concatination of chars

I am having trouble concatenating 2 chars

Code:

char a = 'a';
char b = 'b';
strcat (a,b);
cout  << a;

what is the proper way of doing something like this?

You can't concatenate two chars into a string of two chars unless you have a string to store it in [and strcat do not take inputs of char anyways].

Either of these would work:
Using C++ properly:

Code:

string a("a");
string b("b");
a += b;  // or a = a + b; if you like typing a lot. 
cout << a;

or standard C with a bit of C++ for output:

Code:

char a[3] = "a";
char b[2] = "b";
strcat(a, b);
cout << a;

Or using indexes to arrays:

Code:

char a[3] = "a";
char b = 'b';
a[1] = b;
a[2] = 0;   // Just in case. It should really be zero from the a[3] = "a"; line.
cout << a;

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Mats