Modifying Variable Values
We've learned how to declare a variable. Now, let's understand how to modify the value of a variable.
Take a look at the following program, which prints the value of myVariable
using the Println
function:
index.go
1234567package main import "fmt" func main() { var myVariable = 7 fmt.Println(myVariable) // Using the name of the variable ('myVariable') we can access and show it's value }
We can use the following syntax for assigning a different value to the variable:
index.go
1myVariable = 9
Notice that this time, we omit the var
keyword because we are not declaring a new variable. Now, let's add this line to the program:
index.go
123456789package main import "fmt" func main() { var myVariable = 7 fmt.Println(myVariable) // Outputs 7 myVariable = 9 fmt.Println(myVariable) // Outputs 9 }
In the code above, we employed the var
keyword to declare a variable. Alternatively, we can use the :=
operator for variable declaration. In such a case, the code will appear as follows:
index.go
123456789package main import "fmt" func main() { myVariable := 7 fmt.Println(myVariable) // Outputs 7 myVariable = 9 fmt.Println(myVariable) // Outputs 9 }
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Modifying Variable Values
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We've learned how to declare a variable. Now, let's understand how to modify the value of a variable.
Take a look at the following program, which prints the value of myVariable
using the Println
function:
index.go
1234567package main import "fmt" func main() { var myVariable = 7 fmt.Println(myVariable) // Using the name of the variable ('myVariable') we can access and show it's value }
We can use the following syntax for assigning a different value to the variable:
index.go
1myVariable = 9
Notice that this time, we omit the var
keyword because we are not declaring a new variable. Now, let's add this line to the program:
index.go
123456789package main import "fmt" func main() { var myVariable = 7 fmt.Println(myVariable) // Outputs 7 myVariable = 9 fmt.Println(myVariable) // Outputs 9 }
In the code above, we employed the var
keyword to declare a variable. Alternatively, we can use the :=
operator for variable declaration. In such a case, the code will appear as follows:
index.go
123456789package main import "fmt" func main() { myVariable := 7 fmt.Println(myVariable) // Outputs 7 myVariable = 9 fmt.Println(myVariable) // Outputs 9 }
Tack för dina kommentarer!