Reverse number pattern in Cpp using while loop

In this tutorial, we will discuss Reverse number pattern in Cpp using while loop

In C++ language, we can use for loop, while loop, do-while loop to display various number, star, alphabet and binary number patterns

In this topic, we demonstrate how to display some reversed number patterns using the nested while loop in Cpp language.

pattern 1

Reverse number pattern in Cpp using while loop — Reverse pyramid pattern 1

Reverse number pattern program 1

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int j,rows;//variable declaration
    cout<<"Enter the number of rows: ";
    cin>>rows;//take input from user for rows
    cout<<"\n";//move to next line

    while(rows>=1){
        int j=rows;
        while(j>=1){
           cout<<j<<" ";
            j--;
        }
        rows--;
    cout<<"\n";//move to next line
    }
    getch();
    return 0;
}

When the above code is compiled and executed, it produces the following results

Enter the number of rows:8

8 7 6 5 4 3 2 1
7 6 5 4 3 2 1
6 5 4 3 2 1
5 4 3 2 1
4 3 2 1
3 2 1
2 1 
1

Pattern 1

Reverse number pattern program 2

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int j,rows;//variable declaration
    cout<<"Enter the number of rows: ";
    cin>>rows;//take input from user for rows
    cout<<"\n";//move to next line
int i;
    while(rows>=0){
        for(i=1; i<=rows; i++){
            cout<<rows<<" ";
        }
        rows--;
    cout<<"\n";//move to next line
    }
    getch();
    return 0;
}

When the above code is compiled and executed, it produces the following results

Enter the number of rows: 8
8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7
6 6 6 6 6 6
5 5 5 5 5
4 4 4 4
3 3 3
2 2
1

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