思路:三角形三条边上打‘’,即j=i||j=0||j=n-i-1时打印‘’,否则打空格```cpp #include <stdio.h> int main() { int n; while (scanf("%d", &n) != EOF) { for (int i = 0; i < n; i++) { for (int j =0; j<n; j++) { if (j==n-i-1||j==i) printf("*"); else printf(" "); } printf("\n"); }

}
return 0;

}