If Else Statement in Programming

An if else statement in programming is a basic programming technique that allows you to make decisions based on certain conditions. It allows your program to execute different pieces of code depending on whether the specified condition evaluates to true or false. This capability is crucial in building dynamic and functional applications.

Importance of If Else Statement:

The importance of if else statements lies in their ability to control the execution of a program. Using if else statements allows developers to apply logic that responds to situations, making programs more versatile and powerful. Whether manipulating user statements, manipulating data, or controlling program flow, if else statements play an important role in programming.

Basic Syntax of If Else Statement:

Generally, the basic syntax of if felse statements follows this pattern:

if (condition) {

// Code block to execute if condition is true

} else {

// Code block to execute if condition is false

}

In this syntax:

1. The `if` keyword begins a conditional statement.
2. The condition is enclosed in parentheses `()`.
3. If the condition evaluates to true, the code block immediately following the `if` statement is executed.
4. If the condition evaluates to false, the code block is executed in the `else` statement.

If Else Statement in C:

Here are the implementation of if else statement in C language:

C

#include <stdio.h>

int main() {
    // Declare and initialize the variable num
    int num = 10;

    // Check if num is greater than 0
    if (num > 0) {
        // If num is greater than 0, print "Number is positive."
        printf("Number is positive.\n");
    } else {
        // If num is not greater than 0, print "Number is non-positive."
        printf("Number is non-positive.\n");
    }

    return 0;
}

Output

Number is positive.

If Else Statement in C++:

Here are the implementation of if else statement in C++ language:

C++

#include <iostream>
using namespace std;

int main() {
    // Declare and initialize the variable num
    int num = 10;

    // Check if num is greater than 0
    if (num > 0) {
        // If num is greater than 0, print "Number is positive."
        cout << "Number is positive." << endl;
    } else {
        // If num is not greater than 0, print "Number is non-positive."
        cout << "Number is non-positive." << endl;
    }

    return 0;
}

Output

Number is positive.

If Else Statement in Java:

Here are the implementation of if else statement in java language:

Java

public class Main {
    public static void main(String[] args) {
        // Declare and initialize the variable num
        int num = 10;

        // Check if num is greater than 0
        if (num > 0) {
            // If num is greater than 0, print "Number is positive."
            System.out.println("Number is positive.");
        } else {
            // If num is not greater than 0, print "Number is non-positive."
            System.out.println("Number is non-positive.");
        }
    }
}

Output

Number is positive.

If Else Statement in Python:

Here are the implementation of if else statement in python language:

Python

# Declare and initialize the variable num
num = 10

# Check if num is greater than 0
if num > 0:
    # If num is greater than 0, print "Number is positive."
    print("Number is positive.")
else:
    # If num is not greater than 0, print "Number is non-positive."
    print("Number is non-positive.")

Output

Number is positive.

If Else Statement in C#:

Here are the implementation of if else statement in C# language:

C#

using System;

class Program {
    static void Main(string[] args) {
        // Declare and initialize the variable num
        int num = 10;

        // Check if num is greater than 0
        if (num > 0) {
            // If num is greater than 0, print "Number is positive."
            Console.WriteLine("Number is positive.");
        } else {
            // If num is not greater than 0, print "Number is non-positive."
            Console.WriteLine("Number is non-positive.");
        }
    }
}

Output

Number is positive.

If Else Statement in Javascript:

Here are the implementation of if else statement in javascript language:

JavaScript

// Declare and initialize the variable num
let num = 10;

// Check if num is greater than 0
if (num > 0) {
    // If num is greater than 0, print "Number is positive."
    console.log("Number is positive.");
} else {
    // If num is not greater than 0, print "Number is non-positive."
    console.log("Number is non-positive.");
}

Output

Number is positive.

This if else statement checks if the variable `num` is greater than 0. If so, the function says “Numbers are good.”; Otherwise, it prints “Number is non-positive”.

Conclusion

If else statements are necessary to implement conditional logic in policy. They provide tools to monitor the system based on specific scenarios, enabling developers to create dynamic and functional applications. Understanding how to properly use if else statements is key to mastering programming languages ​​like C++, Java, etc.