Go if Statement - Go Tutorial

The if statement is a fundamental part of Go programming that allows you to execute specific blocks of code based on whether a condition evaluates to true. This is particularly useful for decision-making processes within your programs.

Syntax

The syntax for an if statement in Go is:

if condition {
    // Code to execute if the condition is true
}

Go
​x
 
if condition {    // Code to execute if the condition is true}​

Important Note: The keyword if must always be in lowercase. Writing it as If or IF will result in an error.

Example 1: Simple Comparison

Let’s check if one number is greater than another. If the condition is true, a message will be printed to the console.

package main
import ("fmt")

func main() {
    if 50 > 30 {
        fmt.Println("50 is greater than 30")
    }
}

Go
 
package mainimport ("fmt")​func main() {    if 50 > 30 {        fmt.Println("50 is greater than 30")    }}​

Example 2: Testing with Variables

You can also use variables to test conditions. Below is an example using motorcycle brands to make it more engaging.

package main
import ("fmt")

func main() {
    ducati := 50
    yamaha := 30

    if ducati > yamaha {
        fmt.Println("Ducati is faster than Yamaha")
    }
}

Go
 
package mainimport ("fmt")​func main() {    ducati := 50    yamaha := 30​    if ducati > yamaha {        fmt.Println("Ducati is faster than Yamaha")    }}​

Explanation of Example 2

In this example, we declare two variables, ducati and yamaha, representing arbitrary values (e.g., speeds or ratings). The condition ducati > yamaha evaluates whether Ducati’s value is greater than Yamaha’s. Since 50 is greater than 30, the program prints “Ducati is faster than Yamaha” to the console.