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Loop Control Statements in Go Language
Loop control statements are used in programming languages to control the flow of loops. These statements help developers to execute certain conditions during loop execution. Go, also known as Golang, is a popular open-source programming language that provides three loop control statements: break, continue, and goto. In this article, we will explore each of these statements in detail and their usage in Go.
The Break Statement
The break statement is used to terminate a loop prematurely. It is usually used when a specific condition is met, and there is no need to continue iterating. The following example shows the usage of the break statement in Go −
Example
In this example, the loop will terminate when i equals 5.
package main
import "fmt"
func main() {
for i := 0; i < 10; i++ {
if i == 5 {
break
}
fmt.Println(i)
}
}
Output
0 1 2 3 4
The Continue Statement
The continue statement is used to skip the current iteration of the loop and move on to the next one. It is typically used when a certain condition is met, and there is no need to execute the current iteration. The following example shows the usage of the continue statement in Go −
Example
In this example, the loop will skip the iteration where i equals 5 and move on to the next one.
package main
import "fmt"
func main() {
for i := 0; i < 10; i++ {
if i == 5 {
continue
}
fmt.Println(i)
}
}
Output
0 1 2 3 4 6 7 8 9
The Goto Statement
The goto statement is used to transfer control to a labeled statement within the same function. It is usually used when a specific condition is met, and the program needs to jump to another part of the code. The following example shows the usage of the goto statement in Go −
Example
package main
import "fmt"
func main() {
i := 0
Loop:
fmt.Println(i)
i++
if i < 10 {
goto Loop
}
}
Output
0 1 2 3 4 5 6 7 8 9
Conclusion
In conclusion, Go provides three loop control statements: break, continue, and goto. These statements help developers to control the flow of loops and execute certain conditions during loop execution. The break statement is used to terminate a loop prematurely, while the continue statement skips the current iteration of the loop. The goto statement is used to transfer control to a labeled statement within the same function. By using these loop control statements effectively, developers can write efficient and optimized code in Go.
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