C++

Hey, I am a complete noob to c++, and I need to know how to add strings.

Eg, I have:
a="one"
b="two"
c="three"

and I would like "d" to equal "onetwothree".

Thank you for any help

>>12
The way you use strcat is not optimal either.
Please provide evidence to support, citing gcc-produced assembly for reference.

I mean, if you care about optimizations, examine it in the form that it's executed, and if you don't - don't critique my C.