编程，输出以下图案 * *** ***** ******* ***** *** *

以下是输出该图案的C++代码：

#include <iostream>
using namespace std;

int main() {
    int n = 4;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n - i; j++) {
            cout << " ";
        }
        for (int j = 0; j < 2 * i + 1; j++) {
            cout << "*";
        }
        cout << endl;
    }
    for (int i = n - 2; i >= 0; i--) {
        for (int j = 0; j < n - i; j++) {
            cout << " ";
        }
        for (int j = 0; j < 2 * i + 1; j++) {
            cout << "*";
        }
        cout << endl;
    }
    return 0;
}