3

How to Declare byte* ( byte array ) in c++ and how to define as a parameter in function definition?

when I declare like below

Function Declaration:

int Analysis(byte* InputImage,int nHeight,int nWidth);

Getting error : "byte" undefined

Improve this question
7
  • use unsigned char instead. its the same....one byte Commented Apr 18, 2013 at 9:49
  • then how should i convert byte* in to unsigned char, getting byte array input from the C# application. Commented Apr 18, 2013 at 9:53
  • Did you want to convert byte from c# to char in c++? am i understand this correctly? Commented Apr 18, 2013 at 10:02
  • 1
    I think you can do this by convert byte into char in c# before pass on to c++ char Commented Apr 18, 2013 at 10:03
  • This one should help you in converting byte in c# to char stackoverflow.com/questions/5431004/… Commented Apr 18, 2013 at 10:04

2 Answers 2

Reset to default
6

There is no type byte in C++. You should use typedef before. Something like

typedef std::uint8_t byte;

in C++11, or

typedef unsigned char byte;

in C++03.

Improve this answer
Sign up to request clarification or add additional context in comments.

Comments

5

The C++ type representing a byte is unsigned char (or other sign flavour of char, but if you want it as plain bytes, unsigned is probably what you're after).

However, in modern C++, you shouldn't be using raw arrays. Use std::vector<unsigned char> if your array is runtime-size, or std::array<unsigned char, N> (C++11) if your array is of static size N. You can pass these to functions via (const) references, like this:

int Analysis(std::vector<unsigned char> &InputImage, int nHeight, int nWidth);

If Analysis does not modify the array or its elements, do this instead:

int Analysis(const std::vector<unsigned char> &InputImage, int nHeight, int nWidth);
Improve this answer

Comments

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.