Write a c++ program 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;
}
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