Question

C code. If I want to display a set of numbers (i.e. calculating numbers with increments). For example: if i want to start with a minimum 100 and increment of 10 every time to a maximum of 200. What is the code or formula is should use?

Answer 1

for( i = 100; i < 201; i += 10) {
< do something exciting with i >
}
should work

Answer 2

If you are only interested in every 10th value for i, then yes, the code you have should work. You could also use a counter of 10 and multiply your variable inside like this:
int k = 100;
for (i = 0; i <= 10 ; i++){
printf("the value of k is: %d", k);
k = k*10-1;
}

Ultimately it depends on what you want to accomplish.

Answer 3

unnfortunately, k*10 - 1 evaluates to 999, then 9989, then...
perhaps not what was desired. The idea is right, but use
k = k + 10

Answer 4

Yes, my mind was elsewhere, still thinking that k was incremented, as i is, once each loop and so you would need to decrement it.