Question

Write a program to print the hollow diamond of stars (*), ask the user to enter an odd number as the height. For example, if user enters height as 7, output will look like:

Y*

Answer 1

#include <iostream>

using namespace std;

int main()
{
int n ;
cout<<"Enter the n value: ";
cin >> n;
for (int i = 1; i <= n ; i += 2) {
for (int j = 0; j < n - 1 - i / 2; j++)
cout<<" ";

for (int j = 0; j < i; j++)
if(j==0 || j==i-1){
cout<<"*";
}
else {
cout<<" ";
}

cout<<endl;
}
for (int i = n-2; i >=1 ; i -= 2) {
for (int j = 0; j < n - 1 - i / 2; j++)
cout<<" ";

for (int j = 0; j < i; j++)
if(j==0 || j==i-1){
cout<<"*";
}
else {
cout<<" ";
}

cout<<endl;
}
return 0;
}

Output: