How can i concatenate string+int+string in c++ : How can I concatenate i+name+letter+i ?

    for(int i = 0; i < 10; ++i){
        //I need a const char* to pass as a parameter to another function
        const char* name  = "mki";
        //letter is equal to "A" for the first 2, "B" for the second 3, 
        //"C" for the following 4 ...
        const char* final_string = ???
    }
I already tried using:
   
    std::to_sting(i)
but I got an error saying that to_string is undefined for std. I'm using VC++. 

Thanks. 