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c++ns-3

Converting a string to uint8_t array in C++

I want an std::string object (such as a name) to a uint8_t array in C++. The function reinterpret_cast<const uint8_t*> rejects my string. And since I'm coding using NS-3, some warnings are being interpreted as errors.

Solution

  • If you want a pointer to the string's data:

    reinterpret_cast<const uint8_t*>(&myString[0])

    If you want a copy of the string's data:

    std::vector<uint8_t> myVector(myString.begin(), myString.end());
uint8_t *p = &myVector[0];