alocation of a matrix

[spank]

I have a matrix alocated dinamicaly:

int **alocmat(int n)
{
        int **a,i=0;
        a=(int**)calloc(n,sizeof(int*));
        for(;i<n;i++) *(a+i)=calloc(n,sizeof(int));

        return a;
}

This code is OK!

and now i try to read using pointers. the bolded line can work using a[i][j], but i want to write it using pointers. how can i do that?

void citire(int** a,int n)
{
        int i=0,j;
        for(;i<n;i++)
                for(j=0;j<n;j++)
                {
                        printf("[%d][%d]: ",i,j);
                        scanf("%d",*(*(a+i)+j));
                }
}

Thank you!

[itsme86]

The problem is that scanf() expects the address of the location in which to store the data, but you're passing the data itself. Try just simply removing the first * so it would look like:

scanf("%d", *(a+i)+j);

Or alternatively you could do this I guess, if it makes it more clear to you what's going on:

scanf("%d", &(*(*(a+i)+j)));

Just like you would do:

int a;

scanf("%d", &a);  // RIGHT!

instead of:

int a;

scanf("%d", a);  // WRONG!

[spank]

and if i want to type it will be:

void tipar(int** a,int n)
{
        int i=0,j;
        for(;i<n;i++)
        {
                for(j=0;j<n;j++) printf("%d ",*(*(a+i)+j));
                printf("\n");
        }

}

thank you!
good forum, good advice!