#include<stdio.h>
int main()
{
    int a[10][10]={0},i,j;
    for(i=0;i<10;i++)
    {
        for(j=0;j<10;j++)
        {
            if(i==j||j==0)
            {
                a[i][j]=1;
            }
            else if(i>j)
            {
                a[i][j]=a[i-1][j]+a[i-1][j-1];
            }
            else
            {
                printf(" ");
            }
            printf("%5d",a[i][j]);
        }
        printf("\n");
    }
    return 0;
}

#include<stdio.h>
int main()
{
    int a[10][10]={0},i,j;
    for(i=0;i<10;i++)
    {
        for(j=0;j<10;j++)
        {
            if(i==j||j==0)
            {
                a[i][j]=1;
            }
            else if(i>j)
            {
                a[i][j]=a[i-1][j]+a[i-1][j-1];
            }
        }
    }
    for(i=0;i<10;i++)
    {
        for(j=0;j<10;j++)
        {
            if(i>=j)
                printf("%5d",a[i][j]);
        }
        printf("\n");
    }
        
    return 0;
}

出来啦，谢谢

谢谢你