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This is the logical C++ program in which we make a tree shape. The program represent a tree shape through logic . (this can also be done by hard code like simple cout.).

Source Code

#include <iostream>

#include <unistd.h>

using namespace std;

/*Uzair*/

void welcomeScrean(void);

void sleep();

void draw();

int main()

{

 system ("color F0");

 welcomeScrean();

 draw();

 return 0;

}

void welcomeScrean(void){

cout<<"\a"

<<"\t*******************************************************"<<endl

<<"\t*******************************************************"<<endl

<<"\t**                   Welcome To                      **"<<endl

<<"\t**                    Draw By *                      **"<<endl

<<"\t**                 Program By LEP                    **"<<endl

<<"\t*******************************************************"<<endl

<<"\t*******************************************************"<<endl

<<endl

<<endl;

sleep();

}

void sleep(){

sleep(1);

for (int i=0 ; i<3;i++)

{

if (i==0)

{

cout<<"\tJust a min ";

}//END IF i

cout<<"\a.";

sleep(2);

}//

}

void draw(){

int size,i,j,k,k1,p;

cout<<"\n\n\tEnter A No : ";

cin>>size;

cout<<"\n\n\t";

for (i=0;i<size;i++)

{

k = size-i;

for (j=0;j<k;j++)

{

cout<<" ";

}

for (j=k;j<size;j++)

{

cout<<"*";

}

cout<<"I";

for (j=k;j<size;j++)

{

cout<<"*";

}

cout<<"\n\t";

}

k = size / 2;

k1 = k / 2;

p = size-k1;

for (i=0;i<k;i++)

{

for(j=0;j<p;j++)

{

cout<<" ";

}

for(j=0;j<k1;j++)

{

cout<<"*";

}

cout<<"I";

for(j=0;j<k1;j++)

{

cout<<"*";

}

cout<<"\n\t";

} 

}

Output of the Program