How do you generate random strings in C++?

Question

I am looking for methods to generate random strings in C++.Here is my code: ``` string randomStrGen(int length) { static string charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; string result; result.resize(length); srand(time(NULL)); for (int i = 0; i < length; i++) result[i] = charset[rand() % charset.length()]; return result; } ``` But the `seed(time(NULL))` is not random enough.Are there any other better way to generate random strings in C++?

Accepted Answer

Don't call `srand()` on each function call - only call it once at first function call or program startup. You migh want to have a flag indicating whether`srand()` has already been called.

The sugested method is good except that you misuse `srand()` and get predictably bad results.

How do you generate random strings in C++?

Solution

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