program make the diamond shape (POP) (141)

#include<iostream>

using namespace std;

int main()

{

int i,j,r;

cout<<"please enter the number of rows:";

cin>>r;

for(i=1; i<=r; i++)

{

for(j=1; j<=r-i; j++)

{

cout<<" ";

}

for(j=1; j<=2*i-1; j++)

{

cout<<"*";

}

cout<<endl;

}

for(i=r-1; i>=1; i--)

{

for(j=1; j<=r-i; j++)

{

cout<<" ";

}

for(j=1; j<=2*i-1; j++)

{

cout<<"*";

}

cout<<endl;

}

}