How to print half lower diamond in c++?

#include<iostream>

#include<conio.h>

using namespace std;

int main()

{

int num;

cout<<"Enter a number : "; cin>>num;

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

{

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

{

cout<<" ";

}

for(int k=0;k<2*(num-i)-1;k++)

{

cout<<"*";

}

cout<<endl;

}

getch();

return 0;

}

Output