#include using namespace std; int main() { char a; cin >> a; for (int i = 1; i <= 3; i++) { //输出空格 for (int j = 0; j < 3 - i; j++) { cout << " "; } //输出星星 for (int j = 1; j <= 2 * i - 1; j++) { cout << a; } cout << endl; } return 0; }