#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#define N 100
int main() {
	int n = 0;
	int row = 0;
	int col = 0;
	int k = 0;
	int arr[N][N] = { 0 };
	printf("请输入要打印的行数:");
	scanf("%d", &n);
	while (n <= 0 || n >= 100) {
		printf("输入过大或过小,请重新输入打印行数(0-100):");
		scanf("%d", &n);
	}
	for (row = 1; row <= n; row++) {
		arr[row][1] = arr[row][row] = 1;
	}
	for (row = 3; row <= n; row++) {
		for (col = 2; col <= row; col++) {
			arr[row][col] = arr[row - 1][col] + arr[row - 1][col - 1];
		}
	}
	for (row = 1; row <= n; row++) {
		for (k = 1; k <= n - row; k++) {
			printf("   ");
		}
		for (col = 1; col <= row; col++) {
			printf("%6d", arr[row][col]);
		}
		printf("\n");
	}
	printf("\n");
	return 0;
}