C++输出一个空心菱形
时间: 2023-11-21 14:04:44 浏览: 92
以下是C++代码实现空心菱形的输出:
```
#include <iostream>
using namespace std;
int main() {
int n;
cout << "请输入菱形边长:";
cin >> n;
// 输出上半部分
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
cout << " ";
}
cout << "*";
for (int j = 1; j < 2 * i - 2; j++) {
cout << " ";
}
if (i != 1) {
cout << "*";
}
cout << endl;
}
// 输出下半部分
for (int i = n - 1; i >= 1; i--) {
for (int j = 1; j <= n - i; j++) {
cout << " ";
}
cout << "*";
for (int j = 1; j < 2 * i - 2; j++) {
cout << " ";
}
if (i != 1) {
cout << "*";
}
cout << endl;
}
return 0;
}
```
输出结果示例(当输入边长为5时):
```
请输入菱形边长:5
*
* *
* *
* *
* *
* *
* *
* *
*
```
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