The question, strictly speaking, makes no sense. You are not talking about numbers (a number cannot be hexadecimal or decimal), you are talking about string ->string function, but it can make sense only if you know how to interpret the string. You have the sample, but the sample is not a spec. What is supposed to be interpret as a character? Say, first two characters can be 0x00 and 0x69, or they could be 0x60 and 0x73 (4 characters per number). The problem is very simple, but you are doing it wrong.
Telecharger Arrow Saison 1 Episode 17 Vostfr Wikipedia. You should read characters representing one output character by groups, say, of 2 or 4. It is 'masked C/C++' a sort of meta-language translated to C/C++. String is an object, += is the 'append operator'. From the FAQ: 'Can I program the Arduino board in C?' 'In fact, you already are; the Arduino language is merely a set of C/C++ functions that can be called from your code. Your sketch undergoes minor changes (e.g. Installation Medal Of Honor Airborne Windows 7 here. Automatic generation of function prototypes) and then is passed directly to a C/C++ compiler (avr-g++). The 7 Minute Rotator Cuff Solution Pdf To Excel more.
All standard C and C++ constructs supported by avr-g++ should work in Arduino. For more details, see the page on the Arduino build process.'