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An `if` statement allows us to check a specific condition once. But what if that condition needs to be checked a certain number of times?

Definite loops can be used to repeat code a fixed number of times.

While an `if` statement only has a conditional expression (like `number < 5`), a definite loop has two additional components:

• An initial statement, which defines the starting value for a loop variable.
Ex: `number := 0`
• A post statement, which defines what happens at the end of each loop iteration.
Ex: `number++`

So while an `if` statement that prints one number less than `5` may look like this:

``````number := 3
if number < 5 {
fmt.Println(number)
}
// Output: 3``````

A `for` loop that prints the numbers `0`, `1`, `2`, `3`, and `4` would look like this:

``````for number := 0; number < 5; number++ {
fmt.Print(number, " ")
}
// Output: 0 1 2 3 4``````

While the `if` statement prints a number once, the `for` loop uses a similar syntax to print a number five times.

Let’s dive deeper into each component of that definite loop:

• The initial statement, `number := 0`, creates a new variable to be used within the `for` loop code block.

• The conditional expression, `number < 5`, will stop the loop when `number` reaches the target value of `5`.

• The post statement, `number++`, increases the value of the `number` variable by `1` each time the code block completes.

In this example, the amount of times that the `number` needed to be printed was known beforehand. But what do we do when we don’t know how many times a loop needs to run?

Find out more in the next exercise!

### Instructions

1.

You are hosting a party and trying to count the number of guests. The last host left a loop to do this, but there is a bug in the code!

Change the initial statement of the loop, `count := 8`, so that the count begins at `1` instead of `8`.

2.

Disaster has struck! Eight people cannot make it to the party!

Change the conditional expression of the loop, `count <= 20`, so that the loop only counts up to `12`.

3.

With the amount of guests set, count off the odd numbered guests to make teams for a game!

Change the post statement of the loop, `count++`, so that `count = count + 2` after the completion of each loop.