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Golang if statement

By IncludeHelp Last updated : October 05, 2024

Golang if statement

The if statement is the simplest decision-making statement. It is used to check the given condition. If the given condition is true then the set of statements will be executed. If the condition is false then the set of statements will not be executed.

Syntax

if(condition){
    // set of statements
}

or 

if condition {
    // set of statements
}

Flow chart

Example 1

Input the age of a person and check whether the person is eligible for voting or not.

In this program, we will use two if statements to check whether the person is eligible for voting or not.

// Golang program to demonstrate the
// example of the simple if statement

package main

import "fmt"

func main() {
	var age int
	
	fmt.Print("Input the age: ")
	fmt.Scanf("%d", &age)

	if age >= 18 {
		fmt.Println("Person is eligible for voting.")
	}

	if age < 18 {
		fmt.Println("Person is not eligible for voting.")
	}
}

Output

RUN 1:
Input the age: 32
Person is eligible for voting.

RUN 2:
Input the age: 12
Person is not eligible for voting.

Example 2

Input an integer value to check whether the given number is positive or negative.

In this program, we will use two if statements to check whether the given number is positive or negative.

// Golang program to demonstrate the
// example of the simple if statement

package main

import "fmt"

func main() {
	var num int

	fmt.Print("Input an integer number: ")
	fmt.Scanf("%d", &num)

	if num >= 0 {
		fmt.Println("Number is positive.")
	}

	if num < 0 {
		fmt.Println("Number is negative.")
	}
}

Output

RUN 1:
Input an integer number: 108
Number is positive.

RUN 2:
Input an integer number: -10
Number is negative.

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