Question

How can we improve the following program?

function main() {
move();
move();
move();
move();
move();
move();
move();
move();
move();
}

main();
JavaScript


A Break down this program into more functions


B Use a for loop to repeat the move command


C Use a while loop to repeat the move command


D Fix the indentation of this program

Answer 1

Improvements can be made to the original program in several ways, as outlined in your options. Below you'll find solutions for each of the requested improvements: A, B, C, and D.

### A. Break down this program into more functions

We can create a function called `moveMultiple` that accepts a parameter for the number of moves to make.

```javascript
function move() {
// Implementation of move function
console.log("Moved one step");
}

function moveMultiple(times) {
for (let i = 0; i < times; i++) {
move();
}
}

function main() {
moveMultiple(8); // Moves 8 times
}

main();
```

### B. Use a for loop to repeat the move command

In this version, we replace the repeated calls to `move()` with a `for` loop inside the main function.

```javascript
function move() {
// Implementation of move function
console.log("Moved one step");
}

function main() {
for (let i = 0; i < 8; i++) {
move();
}
}

main();
```

### C. Use a while loop to repeat the move command

Here, we use a `while` loop to accomplish the same goal.

```javascript
function move() {
// Implementation of move function
console.log("Moved one step");
}

function main() {
let times = 8;
let i = 0;

while (i < times) {
move();
i++;
}
}

main();
```

### D. Fix the indentation of this program

Proper indentation is important for readability. The original program is very simple and mostly correct already; we can just improve its clarity.

```javascript
function move() {
// Implementation of move function
console.log("Moved one step");
}

function main() {
move();
move();
move();
move();
move();
move();
move();
move();
}

main();
```

### Summary

Any of the above improvements enhance the original program by making it cleaner and more maintainable. Each approach has its own merits, and the choice of which to implement can depend on personal or project-specific coding style preferences.