Printing reverse number pattern examples using For Loop in C++

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Example Program

Here is the simple program for printing reverse number pattern using For Loop in C++.

Source Code Example : 1

#include<iostream>
using namespace std;
int main()
{
    int i,j,a;
    cout<<"\nEnter the value:";
    cin>>a;
    for(i=1;i<=a;i++)
    {
        cout<<"\n";
        for(j=i;j>0;j--)
        {
            cout<<j;
        }
    }
    return 0;
}

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Output

Enter the value:10
1
21
321
4321
54321
654321
7654321
87654321
987654321
10987654321

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Source Code Example : 2

#include<iostream>
using namespace std;
int main()
{
    int i,j,a;
    cout<<"\nEnter the value:";
    cin>>a;
    for(i=1;i<=a;i++)
    {
        cout<<"\n";
        for(j=i;j>0;j--)
        {
            cout<<j;
        }
    }
    return 0;
}

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Output

Enter the value:10
1
21
321
4321
54321
654321
7654321
87654321
987654321
10987654321

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Source Code Example : 3

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=1;j<=n-i;j++)
        {
            cout<<" ";
        }
        for(j=n;j>n-i;j--)
        {
            cout<<j;
        }
    }
    return 0;
}

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Output

Enter the value:10
         10
        109
       1098
      10987
     109876
    1098765
   10987654
  109876543
 1098765432
10987654321

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Source Code Example : 4

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=0;i<n;i++)
    {
        cout<<"\n";
        for(j=n-i;j<=n;j++)
        {
            cout<<j;
        }
    }
}

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Output

Enter the value:10
10
910
8910
78910
678910
5678910
45678910
345678910
2345678910
12345678910

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Source Code Example : 5

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=i;j<=n;j++)
        {
            cout<<j;
        }
    }
    return 0;
}

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Output

Enter the value:10
12345678910
2345678910
345678910
45678910
5678910
678910
78910
8910
910
10

---

Source Code Example : 6

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cout<<"\n";

        for(j=1;j<=i;j++)
        {
            cout<<" ";
        }
        for(j=n;j>=i;j--)
        {
            cout<<j;
        }
    }
    return 0;
}

To download raw file Click Here

Output

Enter the value:10
10987654321
  1098765432
   109876543
    10987654
     1098765
      109876
       10987
        1098
         109
          10

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Source Code Example : 7

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=1;j<=n-i;j++)
        {
            cout<<"  ";
        }
        for(j=n;j>n-i;j--)
        {
            cout<<" "<<j;
        }
        for(j=n-i+2;j<n+1;j++)
        {
            cout<<" "<<j;
        }
    }
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=1;j<=i;j++)
        {
            cout<<"  ";
        }
        for(j=n;j>i;j--)
        {
            cout<<" "<<j;
        }
        for(j=i+2;j<=n;j++)
        {
            cout<<" "<<j;
        }

    }
    return 0;
}

To download raw file Click Here

Output

Enter the value:10
                   10
                 10 9 10
               10 9 8 9 10
             10 9 8 7 8 9 10
           10 9 8 7 6 7 8 9 10
         10 9 8 7 6 5 6 7 8 9 10
       10 9 8 7 6 5 4 5 6 7 8 9 10
     10 9 8 7 6 5 4 3 4 5 6 7 8 9 10
   10 9 8 7 6 5 4 3 2 3 4 5 6 7 8 9 10
 10 9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9 10
   10 9 8 7 6 5 4 3 2 3 4 5 6 7 8 9 10
     10 9 8 7 6 5 4 3 4 5 6 7 8 9 10
       10 9 8 7 6 5 4 5 6 7 8 9 10
         10 9 8 7 6 5 6 7 8 9 10
           10 9 8 7 6 7 8 9 10
             10 9 8 7 8 9 10
               10 9 8 9 10
                 10 9 10
                   10
                    

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