Diamondpat.cpp

#include<iostream>

using namespace std;

int main()

{

    int i, j, rowNum, space;

    cout<<"Enter the Number of Rows: ";

    cin>>rowNum;

    space = rowNum-1;

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

    {

        for(j=1; j<=space; j++)

            cout<<" ";

        space--;

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

            cout<<"*";

        cout<<endl;

    }

    space = 1;

    for(i=1; i<=(rowNum-1); i++)

    {

        for(j=1; j<=space; j++)

            cout<<" ";

        space++;

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

            cout<<"*";

        cout<<endl;

    }

    cout<<endl;

    return 0;

}