Go Language if Statement

Go Language Conditional Statements

The if statement consists of a boolean expression followed by one or more statements.

Syntax

The syntax for an if statement in Go programming language is as follows:

if boolean expression {
   /* Executed when the boolean expression is true */
}

If the boolean expression evaluates to true, the block of statements following it is executed. If it evaluates to false, the block is not executed.

Here is the flowchart:

Example

Using if to determine the size of a variable:

Example

package main

import "fmt"

func main() {
   /* Define local variables */
   var a int = 10

   /* Use if statement to evaluate boolean expression */
   if a < 20 {
      /* Statements to be executed if the condition is true */
      fmt.Printf("a is less than 20\n")
   }
   fmt.Printf("The value of a is: %d\n", a)
}

The output of the above code is:

a is less than 20
The value of a is: 10

Go Language Conditional Statements