# Solved: int to octal

Swift is a powerful language that allows you to manipulate numbers and strings in numerous ways. It is robust, intuitive, and its unique features make it easy to approach for novice programmers, while at the same time being comprehensive for seasoned programmers. One common programming task is converting numbers from one system to another, for instance converting integers to octal system.

## The Octal System in Swift

The Octal System is borrowed from mathematics and has a base of 8, uses digits from 0 to 7. Swift has built-in capabilities to perform calculations and conversions in the octal system. To transform an integer to an octal you can use the String format specifiers.

```let int = 100
let octal = String(format:"%o", int)
print(octal)  // prints: "144"
```

In this code snippet, we first declare an integer variable `int` and assign the value of 100. The function `String(format: “%o”, int)` converts this integer into an Octal number and the result is stored in the `octal` variable.

## Details of the Swift Code

The Swift programming language features numerous classes and functions that make writing code more efficient and less error-prone.

The String class plays a significant role in this code. It is one of the most commonly used classes in Swift and is designed to make string manipulations easy and intuitive.

• format: This is a function of the String class. It styles and formats a string value, which we pass as an argument. In our case, “%o” stands for an octal number.
• int: This is our initial integer. We are passing it to the format function as the argument.

The `print()` function simply outputs the octal value to the console.

## Swift and Numerical Systems

Working with different numerical systems and their conversions is a common task in programming. Whether it’s octals, binaries, or decimals, Swift provides powerful tools to handle them efficiently.

Swift’s flexibility means that you can easily perform operations and transition between different numerical systems in your code with only a few lines of code. This makes Swift an important language in applications that require numerical conversions like computer graphics, cryptography, and more.

While this example focuses on integer to octal conversion, one can likewise utilize similar methods for different conversions such as Binary, Hexadecimal, or Decimal. Swift indeed makes numerical system tasks manageable and approachable.

Indeed, understanding these features of Swift provides a reflective insight into the language’s capabilities, improving your coding skills and widening your programming toolset.

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