Write a C++ program to print the hollow rhombus star pattern using for loop.
#include<iostream> using namespace std; int main() { int i, j, k, rows; cout << "Enter Hollow Rhombus Star Pattern Row = "; cin >> rows; cout << "Hollow Rhombus Star Pattern\n"; for(i = 1; i <= rows; i++) { for(j = 1; j <= rows - i; j++) { cout << " "; } for(k = 1; k <= rows; k++) { if (i == 1 || i == rows || k == 1 || k == rows) { cout << "* "; } else { cout << " "; } } cout << "\n"; } return 0; }

This C++ example prints the hollow rhombus pattern of a given character using a while loop.
#include<iostream> using namespace std; int main() { int i = 1, j, k, rows; char ch; cout << "Enter Hollow Rhombus Star Pattern Row = "; cin >> rows; cout << "Enter Symbol for Hollow Rhombus Pattern = "; cin >> ch; cout << "Hollow Rhombus Star Pattern\n"; while( i <= rows) { j = 1; while(j <= rows - i) { cout << " "; j++; } k = 1; while( k <= rows) { if (i == 1 || i == rows || k == 1 || k == rows) { cout << ch << " "; } else { cout << " "; } k++; } cout << "\n"; i++; } return 0; }
Enter Hollow Rhombus Star Pattern Row = 16
Enter Symbol for Hollow Rhombus Pattern = @
Hollow Rhombus Star Pattern
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