杨辉三角问题

 1 #include<stdio.h>
 2 #include <windows.h>
 3 #define N 10
 4 int main()
 5 {
 6     int a[N][N] = { 0 };
 7     for (int i = 0; i < N; i++)
 8     {
 9         for (int j = 0; j < N; j++)
10         {
11             if (i==j||j==0)
12             {
13                 a[i][j] = 1;
14             }
15             else {
16                 a[i][j] = a[i - 1][j - 1] + a[i - 1][j];
17             }
18         }
19     }
20 
21     for (int i = 0; i < N;i++)
22     {
23         for (int j = 0; j <= i; j++)
24         {
25             printf("%4d", a[i][j]);
26 
27         }
28         printf("\n");
29     }
30 
31     for (int i = 0; i < N; i++)
32     {
33         printf("%*d", 30 -2* i, a[i][0]);
34         for (int j = 1; j <= i; j++)
35         {
36             printf("%4d", a[i][j]);
37 
38         }
39         printf("\n");
40     }
41 
42 
43     system("pause");
44 }