Convert an int to ASCII character

I have

int i = 6;

and I want

char c = '6'

by conversion. Any simple way to suggest?

EDIT: also i need to generate a random number, and convert to a char, then add a '.txt' and access it in an ifstream.

Straightforward way:

char digits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
char aChar = digits[i];

Safer way:

char aChar = '0' + i;

Generic way:

itoa(i, ...)

Handy way:

sprintf(myString, "%d", i)

C++ way: (taken from Dave18 answer)

std::ostringstream oss;
oss << 6;

Boss way:

Joe, write me an int to char converter

Studboss way:

char aChar = '6';

Joe's way:

char aChar = '6'; //int i = 6;

Nasa's way:

//Waiting for reply from satellite...

Alien's way: '9'

//Greetings.

God's way:

Bruh I built this

Peter Pan's way:

char aChar;

switch (i)
{
  case 0:
    aChar = '0';
    break;
  case 1:
    aChar = '1';
    break;
  case 2:
    aChar = '2';
    break;
  case 3:
    aChar = '3';
    break;
  case 4:
    aChar = '4';
    break;
  case 5:
    aChar = '5';
    break;
  case 6:
    aChar = '6';
    break;
  case 7:
    aChar = '7';
    break;
  case 8:
    aChar = '8';
    break;
  case 9:
    aChar = '9';
    break;
  default:
    aChar = '?';
    break;
}

Santa Claus's way:

//Wait till Christmas!
sleep(457347347);

Gravity's way:

//What

'6' (Jersey) Mikes'™ way:

//

SO way:

Guys, how do I avoid reading beginner's guide to C++?

My way:

or the highway.

Comment: I've added Handy way and C++ way (to have a complete collection) and I'm saving this as a wiki.

Edit: satisfied?