Squre Shape in C++

#include<iostream>
#include<conio.h>
using namespace std;

int main()

{

for(int a=1;a<=15;a++)

{

cout<<"* ";

}

cout<<endl;

for(int b=1;b<=20;b++)

{

for(int c=1;c<=1;c++)

{

cout<<"*";

}
for(int d=1;d<=28;d++)
{
cout<<" ";
}

cout<<"*"<<endl;

}

for(int e=1;e<=15;e++)

{

cout<<"* ";

}

getch();

}