C faster way to check if a directory exists

Question

I\'m using opendir function to check if a directory exists. The problem is that I\'m using it on a massive loop and it\'s inflating the ram used by my app.

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Answer 1

You could call mkdir(). If the directory does not exist then it will be created and 0 will be returned. If the directory exists then -1 will be returned and errno will be set to EEXIST.