c++ - How to insert the value of a variable in a char* -

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I have mastered C # and I decided to start on C ++ to work on some personal things Have done Anyway, I want to know how to do this (C #) in C ++ For the 

  (int i = 0; i & lt; 16; i ++) say ("[" + "+ i +"] idk ");

Any and all help is appreciated, even if it is writing in the original C ++ also helps.

You can also use stringstream s, 

  #include & lt; Iostream & gt; # Include & lt; Sstream & gt; using namespace std; Int main () {Ostringstream OS; For (Int i = 0; I

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