c++ program that display following pattern.

for n=5
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++)
{


if(j%2==0)
cout<<"?";
else
cout<<"*";
}
cout<<"\n";
}
return 0;
}