Basic-dpp-set/printing inputs by through function call using 2d array pointers at main · mhjcodes/Basic-dpp-set · GitHub

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#include <stdio.h>

void f1(int (*q)[4], int rm, int cm) ;
void f2(int (*u)[4], int rm, int cm) ;

int main()
{
    int a[3][4];
    int (*p)[4] = a;
    f1(p,3,4);
    f2(p,3,4);
    return 0;
}

void f1(int (*q)[4], int rm, int cm)
{
    int i, j;
    for (i = 0; i < rm; i++) {
        printf("Enter four numbers: ");
        for (j = 0; j < cm; j++)
        {
            scanf("%d", &q[i][j]);
        }
    }
}

void f2(int (*u)[4], int rm, int cm)
{
    int i, j;
    for (i = 0; i < rm; i++) {
        for (j = 0; j < cm; j++)
        {
            printf("%d ", u[i][j]);
        }
        printf("\n");
    }
}

/* important note: the 'q' pointer is used to access and modify the elements of the array pointed to by 'p'
To clarify,'(*q)[4]' in the parameter declaration int '(*q)[4]' indicates that q is a pointer to an array of size 4. It does not store the address of the p pointer itself, but rather it stores the address of the first element of the array (a[0]).
Note: when pointer has array A address, array A= p */


method 2


#include <stdio.h>

void f1(int (**q)[4], int rm, int cm) ;
void f2(int (**u)[4], int rm, int cm) ;

int main()
{
    int a[3][4];
    int (*p)[4] = a;
    f1(&p,3,4);
    f2(&p,3,4);
    return 0;
}

void f1(int (**q)[4], int rm, int cm)
{
    int i, j;
    for (i = 0; i < rm; i++)
    {
        printf("Enter four numbers: ");
        for (j = 0; j < cm; j++)
        {
            scanf("%d", &(*q)[i][j]);
        }
    }
}

void f2(int (**u)[4], int rm, int cm)
{
    int i, j;
    for (i = 0; i < rm; i++)
    {
        for (j = 0; j < cm; j++)
        {
            printf("%d ", (*u)[i][j]);
        }
        printf("\n");
    }
}