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Aprende Declaring and Defining Functions | Functions
Introduction to GoLang

bookDeclaring and Defining Functions

A function is a reusable block of code that accomplishes a specific task. To declare a function, you can use the func keyword. Here is the syntax for defining a basic function:

func functionName() {
    // Code to be executed
}

Below is a straightforward example of a function created using the provided format:

index.go

index.go

copy
123
func sayHelloWorld() { fmt.Println("Hello World") }

Here is a visual representation illustrating the declaration of a function:

If we incorporate the code provided above into our program, it will transform into a reusable component that we can invoke as often as needed by calling the function. To call or execute a function, use the following syntax:

functionName()

Here is an example of a comprehensive program that employs the previously mentioned function:

index.go

index.go

copy
12345678910
package main import "fmt" func sayHelloWorld() { fmt.Println("Hello World") } func main() { sayHelloWorld() }

Within the main function, we utilized sayHelloWorld() to invoke the function. You can replicate this call as many times as needed to execute it repeatedly:

index.go

index.go

copy
123456789101112
package main import "fmt" func sayHelloWorld() { fmt.Println("Hello World") } func main() { sayHelloWorld() sayHelloWorld() sayHelloWorld() }
question mark

Select the appropriate line of code to call the defined function:

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 4. Capítulo 1

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bookDeclaring and Defining Functions

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A function is a reusable block of code that accomplishes a specific task. To declare a function, you can use the func keyword. Here is the syntax for defining a basic function:

func functionName() {
    // Code to be executed
}

Below is a straightforward example of a function created using the provided format:

index.go

index.go

copy
123
func sayHelloWorld() { fmt.Println("Hello World") }

Here is a visual representation illustrating the declaration of a function:

If we incorporate the code provided above into our program, it will transform into a reusable component that we can invoke as often as needed by calling the function. To call or execute a function, use the following syntax:

functionName()

Here is an example of a comprehensive program that employs the previously mentioned function:

index.go

index.go

copy
12345678910
package main import "fmt" func sayHelloWorld() { fmt.Println("Hello World") } func main() { sayHelloWorld() }

Within the main function, we utilized sayHelloWorld() to invoke the function. You can replicate this call as many times as needed to execute it repeatedly:

index.go

index.go

copy
123456789101112
package main import "fmt" func sayHelloWorld() { fmt.Println("Hello World") } func main() { sayHelloWorld() sayHelloWorld() sayHelloWorld() }
question mark

Select the appropriate line of code to call the defined function:

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 4. Capítulo 1
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