打印 n 阶实心菱形:
#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++)
cout << " ";
for (int j = 1; j <= 2 * i - 1; j++)
cout << "*";
cout << endl;
}
for (int i = n - 1; i >= 1; i--) {
for (int j = 1; j <= n - i; j++)
cout << " ";
for (int j = 1; j <= 2 * i - 1; j++)
cout << "*";
cout << endl;
}
return 0;
}
2-2的题目不怎么会做我决定先放下，我好弱智啊
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