Accessing variables in a set individually.

Here is a simple program that prints 0 to 9 integers.

Code:

`#include <iostream>`

using namespace std;

int main () {

int x;

for (x=0;x<10;x++)

cout<< x;

return 0;

}

My question is, is there a way in which I can, for example, access these numbers individually and allows me to manipulate them, for example, by multiplying them together or adding or subtracting them from each other and so on. I mean I know one way of getting their total but I don't want to access the numbers as a set but as individual numbers. So for example instead of just getting the total, I want to add 1+3 from these numbers or multiply 2 and 5 and so on. Thanks in advance.