CODEWITHSUNDEEP
c++opencv
nelya9227
nelya9227

Reputation: 319

How to create file names with changing number

I want to save images in number.jpg for each time.

For example, first I will save it as 1.jpg, 2.jpg, ...

I will be writing the images using imwrite() function.

Upvotes: 3

Views: 2648

Answers (1)

Fantastic Mr Fox
Fantastic Mr Fox

Reputation: 33864

You should really have researched this a little more but making numbered filenames is very easy:

int filecount = 0; //increment this

stringstream filename;
filename << "filename_" << std::setw(4) << std::setfill('0') << filecount << ".jpg";

setfill and setw make the width of the number 4 and ill it out with 0 so it will look like:

filename_0000.jpg
filename_0001.jpg
...

You can then use imwrite like this:

imwrite(filename.str().c_str(), image);

Upvotes: 9

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