Question

loopy loopy loops

Answer 1

Assume the int variables i, lo, hi, and result have been declared and that lo and hi have been initialized.

Write a for loop that adds the integers between lo and hi (inclusive), and stores the result in result.

Your code should not change the values of lo and hi. Also, do not declare any additional variables -- use only i, lo, hi, and result.

Answer 2

result = 0;
for (i >= lo && i <= hi; i++;)
{
result += i;
}

Answer 3

Lemme open visual studio real qucik

Answer 4

quick*

Answer 5

```cpp
int result = 0;
```
You forgot to identify the datatype

Answer 6

Ah, didn't realize it already defined it

Answer 7

the stuff in black is what they did, but they don't show us that before we attempt the question at all

Answer 8

Ah

Answer 9

K finally got my visual studio setup lol

Answer 10

-still figuring this out-

Answer 11

I would think it would be
```cpp
i = lo;
for (i >= 5 && i <= 10; i++;) {
result += i;
}
```

but the loop isn't ending for some reason

Answer 12

so I'm sitting here scratching my head at that

Answer 13

unless I'm mistaking the logic should be fine :thinking_face:

Answer 14

sorry, brother needed me

Answer 15

maybe something along the lines of this?

result = 0;
i = lo;
for (i <= hi; i++)
{
result += i;
}

Answer 16

got it, was on the right train of thought with that last idea

Answer 17

there ya go =P

Answer 18

Given an int variable n that has been initialized to a positive value and, in addition, int variables k and total that have already been declared, use a do...while loop to compute the sum of the cubes of the first n whole numbers, and store this value in total. Thus if n equals 4, your code should put 1*1*1 + 2*2*2 + 3*3*3 + 4*4*4 into total. Use no variables other than n, k, and total.

Answer 19

total = 0;
do
{
total += k*k*k;
k++;
}
while(n >= k);

Answer 20

```cpp
int total = 0;
do
{
total += k*k*k;
k++;
}
while(n >= k);
```

Answer 21

total was already declared as an int

Answer 22

did it just so it would show the full code lol

Answer 23

got it