Write a Program to Print Three Numbers in Descending Order: A Step-By-Step Guide

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Write a Program to Print Three Numbers in Descending Order: A Step-By-Step Guide
vinaykhatri

Vinay Khatri
Last updated on May 22, 2024

    Let's say we have three numbers and need to sort them in descending order. How would we do that? Well, the answer is that we will use the if-else statement. Every high-level programming language supports if-else statements .

    This programming tutorial will teach us how to print three numbers in descending order in various programming languages. The program we create needs to ask a user to enter 3 numbers. Then by using the if-else statement, we will sort the numbers in descending order.

    Example

    Input:11 13 10

    Output:10 11 13

    C Program to Print Three Numbers in Descending Order

    #include<stdio.h>
    
    intmain() 
    
    {
    
    int num1, num2, num3, small, smaller, smallest;
    
    
    
    //input 3 numbers from user
    
    printf("Enter 3 Numbers eg(13 4 14): ");
    
    scanf("%d %d %d", &num1, &num2, &num3);
    
    
    
    //for num1 is the greatest
    
    if(num1>=num2 && num1>=num3)
    
    {
    
    if(num2>=num3)
    
    {
    
    printf("Descending: %d %d %d", num1, num2, num3);
    
    }
    
    else
    
    {
    
    printf("Descending: %d %d %d", num1, num3, num2);
    
    }
    
    } 
    
    //for num2 is the greatest
    
    elseif(num2>=num1 && num2>=num3)
    
    {
    
    if(num1>=num3)
    
    {
    
    printf("Descending: %d %d %d", num2, num1, num3);
    
    }
    
    else
    
    {
    
    printf("Descending: %d %d %d", num2, num3, num1);
    
    }
    
    } 
    
    //for num3 is the greatest
    
    else
    
    {
    
    if(num2>=num1)
    
    {
    
    printf("Descending: %d %d %d", num3, num2, num1);
    
    }
    
    else
    
    {
    
    printf("Descending: %d %d %d", num3, num1, num2);
    
    }
    
    }
    
    return0;
    
    }

    Output

    Enter 3 Numbers eg(13 4 14):13 4 14
    
    Descending:14 13 4

    C++ Program to Print Three Numbers in Descending Order

    #include<iostream>
    
    usingnamespace std;
    
    intmain() 
    
    {
    
    int num1, num2, num3;
    
    
    
    //input 3 numbers from user
    
    cout<<"Enter 3 Numbers eg(13 4 14): "; cin>>num1>>num2>>num3;
    
    
    
    //for num1 is the greatest
    
    if(num1>=num2 && num1>=num3)
    
    {
    
    if(num2>=num3)
    
    {
    
    cout<<"Descending: "<<num1<<" "<<num2<<" "<<num3;
    
    }
    
    else
    
    {
    
    cout<<"Descending: "<<num1<<" "<<num3<<" "<<num2; 
    
    } 
    
    } 
    
    //for num2 is the greatest
    
    elseif(num2>=num1 && num2>=num3)
    
    {
    
    if(num1>=num3)
    
    {
    
    cout<<"Descending: "<<num2<<" "<<num1<<" "<<num3;
    
    }
    
    else
    
    {
    
    cout<<"Descending: "<<num2<<" "<<num3<<" "<<num1; 
    
    } 
    
    } 
    
    //for num3 is the greatest
    
    else
    
    {
    
    if(num2>=num1)
    
    {
    
    cout<<"Descending: "<<num3<<" "<<num2<<" "<<num1;
    
    }
    
    else
    
    {
    
    cout<<"Descending: "<<num3<<" "<<num1<<" "<<num2;
    
    }
    
    }
    
    return0;
    
    }

    Output

    Enter 3 Numbers eg(13 4 14): 13 4 14
    
    Descending: 14 13 4

    Python Program to Print Three Numbers in Descending Order

    # input3 numbers from user
    
    num1, num2, num3 =map(int, input("Enter 3 Numbers eg(13 4 14): ").split())
    
    # for num 1 is the greatest
    
    if(num1>=num2 and num1>= num3):
    
    if(num2>=num3):
    
    print(f"Descending: {num1} {num2} {num3}")
    
    else:
    
    print(f"Descending: {num1} {num3} {num2}")
    
    # for num 2 is the greatest
    
    elif(num2>=num1 and num2>= num3):
    
    if(num1>=num3):
    
    print(f"Descending: {num2} {num1} {num3}")
    
    else:
    
    print(f"Descending: {num2} {num3} {num1}")
    
    # for num 3 is the greatest
    
    else:
    
    if(num2>=num1):
    
    print(f"Descending: {num3} {num2} {num1}")
    
    else:
    
    print(f"Descending: {num3} {num1} {num2}")

    Output

    Enter 3 Numbers eg(13 4 14):13 4 14
    
    Descending:14 13 4

    Java Program to Print Three Numbers in Descending Order

    import java.util.Arrays;
    
    import java.util.Scanner;
    
    public classDescendingOrder {
    
    public static voidmain(String[] args) {
    
    Scannerscanner = newScanner(System.in);
    
    int[] nums = newint[3];
    
    System.out.println("Enter three numbers:");
    
    for (inti = 0; i < nums.length; i++) {
    
    nums[i] = scanner.nextInt();
    
    }
    
    Arrays.sort(nums);
    
    for (int i = nums.length - 1; i >= 0; i--) {
    
    System.out.print(nums[i] + " ");
    
    }
    
    }
    
    }

    Output

    Enter three numbers:
    
    1
    
    7
    
    9
    
    9 7 1

    Wrapping Up

    In this tutorial, we learned how to implement a program that prints three numbers in descending order in three different programming languages, namely C, C++, and Python. The algorithm of such a program is very simple.

    First, we check for the largest number among the three values, and then in the nested if-else statement, we look for the second-largest number. The time and space complexity of the above program is constant because there are only three elements to sort.

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