Question

Which general while loop definition is written correctly?

A

while (x is true) {
// code
}
B

if (i < 5) {
//code
}
C

while (let i = 0; i < count; i++) {
//code
}
D

while (condition) {
//code
}


A


B


C


D

Answer 1

The correct definition of a general while loop is:

**D**

```plaintext
while (condition) {
//code
}
```

Here's a brief explanation of each option:

- **A**: This option uses "is true" which is not correct syntax for a while loop in most programming languages; it should just evaluate a condition (e.g., `while (x)`, where `x` is a boolean).

- **B**: This is an `if` statement, not a while loop.

- **C**: This uses the `let` keyword in the loop condition, which is not correct. This syntax resembles a `for` loop, not a `while` loop.

- **D**: This is the correct syntax for a while loop, where `condition` is evaluated, and the code block executes as long as the condition is true.