#include <stdio.h> int main() { int a; while (scanf("%d", &a) != EOF) { int i; for (i = 0; i < a; i++) { int j, k; for (j = i; j < a - 1; j++)//先打空格 printf(" "); for (k = 0; k <= i ; k++)//再打* printf("* "); printf("\n"); } } return 0; }