How can i convert the value of a array and put them in to a string?

in example,
in any state of my code i write array[i]=19;
then how can i put the value in a string and make string[i]=19?

in example,
in any state of my code i write array[i]=19;
then how can i put the value in a string and make string[i]='19'?
which show numeric 19 when i print the string (usring puts() or something else)

language C is to be used

okay.. in array[i] you have a number right? in your case it is 19.
an array can hold multi digit numbers at a single position but string is a array of characters and each position in a string can hold only 1 character. so string[i] can hold only one character. in cant hold '19' as it is made up of two characters '1' and '9'. if your number was made up of only one digit i.e.

array[i] = 2;

then you can follow the following format to put your number in the string[i] position as a character:

string[i] = array[i]+ '0' ; or string[i] = array[i] + 48;

here 48 is the integer value for the character '0' (zero). the integer value for '2' will be 2+48 = 50. for any integer number n shown as a char 'n' the integer value will be

'n' = n+48;
(char) (it's integer value);

when u assign the integer value of a character to a char variable or a string position, the compiler converts that number to its corresponding character before assigning.
when you do this with strings, remember to mark the end of your string with a '\0' as the compiler wont do it if u assign this way.

if you wish to put multi digit number in your string, you can break your numbers into single digits and assign them one by one or you can use the itoa(); function.

What?

You mean like -> string[i] = '19'; <- ???

what language are u using?