Go has three functions for outputting text:
- Print()
- Println()
- Printf()
The Print() function prints its parameters in its default format.
Example
Print values of i and j:
package main
import "fmt"
func main() {
var i, j string = "Hello", "World"
(i)
(j)
}result:
HelloWorld
Example
If we want to print parameters in a new line, we need to use\n。
package main
import "fmt"
func main() {
var i, j string = "Hello", "World"
(i, "\n")
(j, "\n")
}result:
Hello World
hint:\nCreate a new line.
Example
We can also use only one Print() to print multiple variables.
package main
import "fmt"
func main() {
var i, j string = "Hello", "World"
(i, "\n", j)
}result:
Hello World
Example
If we want to add spaces between string parameters, we need to use " ":
package main
import "fmt"
func main() {
var i, j string = "Hello", "World"
(i, " ", j)
}result:
Hello World
Example
If the argument is neither a string nor an integer, Print() inserts spaces between the arguments:
package main
import "fmt"
func main() {
var i, j = 10, 20
(i, j)
}result:
10 20
The Println() function is similar to the Print() function, with the difference being that spaces are added between the parameters and newlines are added at the end:
Example
package main
import "fmt"
func main() {
var i, j string = "Hello", "World"
(i, j)
}result:
Hello World
Printf() function
The Printf() function first formats its parameters based on the given formatting placeholder and then prints them.
Here we will use two formatted placeholders:
-
%vValues used to print parameters -
%TTypes of parameters used to print
Example
package main
import "fmt"
func main() {
var i string = "Hello"
var j int = 15
("The value of i is: %v, type: %T\n", i, i)
("The value of j is: %v, type: %T", j, j)
}result:
The value of i is: Hello, type: string j is: 15, type: int
This is the end of this article about the detailed explanation of the use of Go language output functions. For more related Go output functions, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!