function agregarSimboloExclamacion(str) { // Agrega un símbolo de exclamación al final del string "str" y retórnalo // Ejemplo: "hello world" ---> "hello world!" // Tu código: }

function agregarSimboloExclamacion(str) {
  return str += "!";
}

agregarSimboloExclamacion("hello world")

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Function from Description: Generate a function just by describing what is needs to do. Choose of many programming languages.
Text Description to SQL Command: Create a SQL command from a description.
Translate Languages: Translate code to any programming language.
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Code to Explanation: Any code explained in plain english.
Fix invalid Code: To spot a missing character somewhere can be frustrating. This feature will help you to fix it.
Get Test for Code: This feature will help you to create tests for your code.
Class from Description: Generate a class just by describing what is needs to do. Choose of many programming languages.
Regex from Description: Create a regex from a description like "check for email".
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Git Command from Description: Find the Git Command you are looking for from a description.
Linux Command: Get the linux command from a description.
Function from Docstring: Provide a docstring to generate the actual function.
Add typing to code: This feature will help you to add typing to your code.
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Time complexity: Get time complexity.
CSS from Description: Generate CSS from Description.
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