题解 | #杨辉三角#

#include <stdio.h>

int main()
{
    int n = 0;
    int arr[30][30] = { 0 };
    scanf("%d", &n);
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j <= i; j++)
        {
            if (0 == j || i == j)
            {
                arr[i][j] = 1;
            }
            else
            {
                arr[i][j] = arr[i - 1][j - 1] + arr[i - 1][j];
            }
            printf("%5d", arr[i][j]);
        }
        printf("\n");
    }

    return 0;
}