//2d diagonal

void main()
{
    int a[2][3];
    int i,j;
    clrscr();
    printf("\nEnter the Element in the Array :: ");
    for(i=0;i<3;i++)
    {
        for(j=0;j<3;j++)
        {
            scanf("%d",&a[i][j]);
        }
    }
    clrscr();
    printf("\n\n\nElements in the Array ::");
    for(i=0;i<3;i++)
    {
        printf("\n\n\t\t\t");
        for(j=0;j<3;j++)
        {
            printf("\t%d",a[i][j]);
        }
    }
    printf("\n\n\nDiagonal Matrix is Under of the Array ::");
    for(i=0;i<3;i++)
    {
        printf("\n\n");
        for(j=0;j<3;j++)
        {
            printf("\t");
            if(i<=j||j==0)printf("\t%d",a[j][i]);
        }
    }
    getch();
}