




C++ Program to print Number Triangle
Like alphabet triangle, we can write the C++ program to print the number triangle. The number triangle can be printed in different ways.
Let's see the C++ example to print number triangle.

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

Output:
 
Enter the Range=5
     1
    121
   12321
  1234321
 123454321  


Enter the Range=6
      1
     121
    2321
   1234321 
  123454321
 12345654321  

















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