Common C language Face question seven: Yang Hui's triangle

  Int _tmain (int argc, _tchar* argv[]) {    int i,j,a[10][10];      //i represents Row, J represents column     for (i=0;i<10;i++)        //first assign values to 0         for (j=0;j<10;j++)            a[i][j]=0;     for (i=0;i<10;i++)       //assigns no row to the tail of 1      {      a[i][0]=1;       a[i][i]=1;     }         //starts with the second line except the last number and the first number,   // Each number is the same column as the previous row of its line with the previous column and   for (i=2;i<10;i++)               for (j=1;j<i;j++)       a[i][j]=a[i-1][j-1]+a[i-1][j];         printf ("**************/n");   for (i=0;i<10;i++)   {    for (j=0;j<i+1;j++)         //j<i+1 because there is no row, the column is the current number of rows +1, as in line 4th there are 5 columns       printf ("%5d", a[i][j);     printf ("n");   }       return 0; }//0:  1//1:  1  1//2:  1  2  1//3:  1   3  3  1//4:  1  4  6  4  1// 5:  1  5  10 10 5  1//...