add this library #include <sstream>
and then write this function

string convert (int x){
    ostringstream temp;
    temp << x;
    return temp.str();
}

Or just use s = to_string(x); where s is string, x is integer

I like to use sprintf() for this kind of situation.

char buf[100];
int x = 10123;
sprintf ( buf, "%d", x );

buf[] has the value of x in it as string. It's like printf() function, but for strings. Hence the name sprintf().

And yes, we also have sscanf().

char buf[] = "1235";
int x;
sscanf ( buf, "%d", &x);