# include < stdio.h>
# include <malloc.h>
# include <string.h>

int main ( void)
{
    int delta (int n) ;
    int malloc() ;
   
    int n ;

    printf (" set n please \n");
    scanf ("%d" ,&n);
    delta(n) ;

    getchar();
    return 0 ;


}

int delta (int n)
{
    int i, j , no , num ,max ;
    int *mtrx ;
   

    max = n * n ;

    mtrx = malloc(max + max ) ;// 此处总是报错   ，   我使用  vc  编辑的   ，请问怎么改啊 ？？？？？

    for (i = 0 ; i < n ; i ++)
    {
        for (j = 0 ; j <= 1 ; j ++)
        {
            if ( i < 1 )
            {
                mtrx[0] = 1 ;

            }
            else
            {
                no = i * n + j ;
                if ( j == 0 || j ==i)
                {
                    num = 1 ;

                }
                else
                {
                    num = mtrx[no - n] + mtrx[no - n - 1] ;
                }
                mtrx[no] = num ;
            }
        }
    }
    printf (" the yang hui's delta is :");
    for ( i = 0 ; i < n ; i ++)
    {
        printf ("\n");
        no = i + n ;
        for (i = 0 ; j <= i ; j ++)
        {
            printf(" %5d" , mtrx[no] );
            no ++ ;
        }
    }
    free (mtrx) ;
        return 0 ;
}

请高手  解决

error C2440: '=' : cannot convert from 'void *' to 'int *'   
   我  编译时出现   上面这句话  ..
  不知道什么意识 ？？？