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c++assertion

Using iterator to initialize string, get "transposed pointer range" exception

Maybe a noob question but why these two lines:

vector<char> v{"h","i"};
string s1(v.cbegin(), v.cend());

won't compile? It says:

"debug assertion failed, exception:transposed pointer range".

Solution

  • Debug assetions happen in run-time, not compile time.
    In any case, you should change:

    vector<char> v{"h","i"};

    to:

    vector<char> v{ 'h','i' };

    char literals should be enclosed with ', not ".
    This way your code should compile and run properly.

    See also @Eljay's comment above for more info how the compiler actually interpreted your current code.

    Side note: better to avoid using namespace std - see here Why is "using namespace std;" considered bad practice?.