【解決方法】コードに何も表示されないのはなぜですか?

```
`#define _CRT_SECURE_NO_WARNINGS

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

#define MAX 5000

`struct Product { // declaring the structure
	char name[255];
	float price;
	int quantity;
};

void readdata(struct Product*);//prototyping the read function
void displaydata(struct Product*);//prototyping the display function

`int main()
{
	int biggest = 0;
	int i, n;
	struct Product dp[MAX];

	printf("Enter the number of products:");
	scanf("%d", &n);

	if (n<0 || n>MAX)
	{
		printf("Invalid numbers!");
	}```

	struct Product* p = (struct Product*)malloc(n * sizeof(struct Product)); // dinamically allocating memory for the structure

	for (i = 0;i < n;i++) // reading the data in main
	{
		printf("Product %d :\n", i + 1);
		readdata(&dp[i]);
		if (dp[i].quantity > biggest)
		{
			biggest = dp[i].quantity; // checking which product has the highest quantity
		}
	}

	printf("The product with the highest quantity is:\n");

	for (i = 0;i < n;i++) // displaying the data in main
	{
		if (dp[i].quantity = biggest)
		{
			displaydata(&dp[i]);//displaying the product with the highest quantity
		}
	}

	for (i = 0;i < n;i++) / freeing the memory
	{
		free(&dp[i]);
	}
      //no output at all
}`

void readdata(struct Product* p) // reading the data
{
	printf("\nName:");
	scanf("%s", p->name);
	printf("\nPrice:");
	scanf("%f", &p->price);
	printf("\nQuantity:");
	scanf("%d", &p->quantity);
}
void displaydata(struct Product* p)
{
	printf("\nName:%s", p->name);
	printf("\nPrice:%f", p->price);
	printf("\nQuantity:%d", p->quantity);
} // displaying the data```

私が試したこと：

The problem I have is that this code displays nothing.It doesn't give any errors, and it returns nothing.Can someone explain where I've made mistakes?

Basically, what I have to do in this code is to display the product with the biggest quantity on stock.

I have a code that is simillar to this one, but it works without any problem, and I don't get why this one doesn't.

Also, did I correctly allocate memory for the structure? If not, I'd gladly accept some explanation on that as well.

Thanks in advance!