Making an array with using malloc need help.

[aatrox]

Hello I have to do exercise in which i cant use "[]" , and in which i can use malloc(), free(), realloc() and calloc(). I need to make an table which for example for:

Input:
4
5
1 2 2 2 5
4
2 2 2 2
7
1 2 3 2 2 3 5
4
2 2 3 2
Gives:
1 2 2 2 5
2 2 2 2
1 2 3 2 2 3 5
2 2 3 2
So its an some of array [x][y]

I was trying to do this here is my code:

#include <iostream>
#include <stdio.h>      
#include <stdlib.h>
using namespace std;

main()
	{
	
	int column;
	int n;
	int *p;
	int line;
	int value;

	scanf("%d",&column);

	for (int i = 0 ; i < column ; i ++)
	{
		scanf("%d",&n);
		p = (int*) malloc(sizeof(int)*n);
		
		for (int j = 0 ; j < n ; j++)
		{

			scanf("%d",&value);

			*(p+j) = value;


		}

	}
}

but its too hard for me, and i couldnt find clear explanation of making arrays with using malloc, and making it free...

Could somebody show me the example how it works? i dont know what is wrong in my code i dont know too that im doing it good or i need to do [][]array with using int** tab = (int**) malloc(x * sizeof(int));

I was trying to make first giving number of columns first for, then giving number of lines (and there is problem cause i dont know how to write it, and then remember it and do next line to make table like in example.

I have to do this for tommorow, im searching for it in books all day and cant get it. On internet i cant find simmilar problem which would explain me it.

Sorry for my English, and thanks for help.