C++ Program to Print Number Triangle

by Online Tutorials Library July 14, 2022

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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