Copying non null-terminated unsigned char array to std::string

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别跟我提以往
别跟我提以往 2020-12-02 20:25

If the array was null-terminated this would be pretty straight forward:

unsigned char u_array[4] = { \'a\', \'s\', \'d\', \'\\0\' };
std::string str         


        
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  •  心在旅途
    2020-12-02 20:32

    There is a still a problem when the string itself contains a null character and you try to subsequently print the string:

    char c_array[4] = { 'a', 's', 'd', 0 };
    
    std::string toto(array,4);
    cout << toto << endl;  //outputs a 3 chars and a NULL char
    

    However....

    cout << toto.c_str() << endl; //will only print 3 chars.
    

    Its times like these when you just want to ditch cuteness and use bare C.

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