#include <iostream>
using namespace std;
void printInvertedPyramid()
{
int size=0;
int blanks=0;
cout<<"Input pyramid size"<<endl;
cin >> size;
for(int iR=0; iR < size; iR++)
{
for(int iC=0; iC<size-blanks;iC++)
{
cout<<"*";
}
blanks++;
cout<<endl;
}
}
void printHollowRectangle()
{
int row, col;
cout<<"Enter row and col "<<endl;
cin >> row >> col;
for(int iR=0; iR< row; iR++)
{
for(int iC=0; iC<col; iC++)
{
if(iR==0 || iR==row-1)
cout<<"*";
else
{
if(iC==0 || iC==col-1)
cout<<"*";
else
cout<<" ";
}
}
cout<<endl;
}
}
int main() {
cout << "Hello World!";
printHollowRectangle();
printInvertedPyramid();
return 0;
}
