Loops are used to execute a block of statements repeatedly based on a condition. Most of the programming languages provide 3 types of loops – for, while, do while. But Go programming language supports only for loop.
The syntax of a Golang for loop is
for initialisation_expression; evaluation_expression; iteration_expression{
// one or more statement
}
The initialisation_expression is executed first(and only once) in Golang for loop.
Then the evaluation_expression is evaluated and if it’s true the code inside the block is executed.
The iteration_expression id is executed, and the evaluation_expression is evaluated again. If it’s true the statement block gets executed again. This will continue until the evaluation_expression becomes false.
Copy the below program into a file and execute it to see the Golang for loop printing numbers from 1 to 5
package main
import "fmt"
func main() {
var i int
for i = 1; i <= 5; i++ {
fmt.Println(i)
}
}
Output is
1
2
3
4
5
