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C++ Program to Print Number Triangle

C++ Program to Print Number Triangle tutorial for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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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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