Filling an array?

[enigmaterror]

Hello, I'm having some trouble with filling an array in my code I'm suppose to write a function that fills an array that looks like this
void fillArray(int ar[], int size, int inc);
The function assumes the 0th element, ar[0] is already filled with some value, and fills the remaining slots, from ar[1] on, with the value of the preceding element plus 'inc'. For instance, when ar[0] was filled with 5, ar[1] should be 8, ar[2] should be 11 and so on.
I have written most of the code but this part for some reason is throwing me off, which honestly at first did not seem so difficult but i have tried everything to and still nothing. if anyone can help me with this fucntion, I would greatly appreciate it. Thank You.

[Athar]

That function is an one-liner, so I'm not sure what you're having problems with.
What have you tried?

[enigmaterror]

I started with a for loop something like this
for (int i = 0; i < size; i++)
after that i tried something like ar[i] + inc. again im kind of new to c++, so i apologize for that. honestly im not too sure what to do after that or if im even on the right track.

[Athar]

Well yeah, now you just need to assign that to ar[i+1] and remember not to step out of bounds:
for (int i=0;i<size-1;i++)ar[i+1]=ar[i]+inc;

Since that is ugly and unnatural, it should be done the other way around:
for (int i=1;i<size;i++)ar[i]=ar[i-1]+inc;

That's a 1-to-1 translation of the task description to C++.

It could also be done like this, which might appeal more to some people (such as me):
for (int i=1;i<size;i++)ar[i]=ar[0]+i*inc;

[enigmaterror]

Oh ok i see now thank you very much, that totally makes sense now thank you very much. You have no idea how much i appreciate this.