c++ program that display following triangle pattern.

for n=3;

pattern:      

        *
        * *
        * * *
        * *
        *


 

#include <iostream>
using namespace std;

int main()
{
int i,j,k;
//input from user
cout<<"Enter a number ";
cin>>k;



for(i=1;i<=k;i++)
{
for(j=1;j<=i;j++)
{
cout<<"*";
}
cout<<"\n";
}

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

}