Go language if statement
if statement consists of a Boolean expression followed by one or more statements.
Grammar
The syntax of the if statement in Go programming language is as follows:
If Boolean expression {
/* Execute when Boolean expression is true */
}
When If is in a Boolean expression of true, the statement block immediately following is executed, and if it is false, it is not executed.
The flow chart is as follows:
Example
Use if to determine the size of a numeric variable:
Example
package main
import "fmt"
func main() {
/* Define local variables */
var a int = 10
/* Using an if statement to determine a Boolean expression */
if a < 20 {
/* If the condition is true, execute the following statement */
fmt.Printf("A less than 20\\n" )
}
fmt.Printf("The value of a is : %d\\n", a)
}
The result of the above code execution is:
A less than 20
The value of a is: 10