Christmas tree in C programming

--------------------------------------Christmas  tree in C Programming----------------------------------
#include<iostream>
using namespace std;

int  main()
{
for(int i=0;i<=2;i++)
{
for(int j=1;j<=3;j++)
{
for(int sp=5-j-i;sp>0;sp--)
{
cout<<" ";
}
for(int k=1;k<=(2*j+2*i-1);k++)
{
cout<<"*";
}
cout<<endl;
}
}
for(int l=1;l<=3;l++)
{
for(int m=1;m<=3;m++)
{
cout<<" ";
}
for(int n=1;n<=3;n++)
{
cout<<"*";
}
cout<<"\n";
}
}//brackets of main
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output:-