สอบถามการเขียนโปรแกรมภาษาซี เรื่องโครงสร้างแบบสแตกค่ะ

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

void main()
{
	int manu;
	char date[10][100],s_date[10][100];
	float p_liter[100],s_liter[100];
	int loop=1;
	int p=0,s=0,n;
	float p_liter_total, s_liter_total;
	float p_bpl[100], p_total[100], s_bpl[100], s_total[100], gas_balance, s_remaining_cost[100], p_remaining_cost_total, p_remaining_cost[100],s_remaining_cost_total;
	while (loop != 0)
	{
		printf(" \n Manu: \n");
		printf("1.Purchase Entry\n");
		printf("2.Sale Entry\n");
		printf("3.Summary\n");
		printf("4.Exit\n");

		printf("Type Number: ");
		scanf("%d", &manu);
		if (manu == 1)
		{
			printf("Purchase Date : ");
			scanf("%s", date);
			printf("Liters : ");
			scanf("%d", &p_liter[p]);
			printf("Baht/Liter : ");
			scanf("%f", &p_bpl[p]);
			printf("Total : %f", p_total[p] = p_liter[p] * p_bpl[p]);
			p++;
		}
		else if (manu == 2)
		{
			printf("Sale Date : ");
			scanf("%s", s_date);
			printf("Liters : ");
			scanf("%d", &s_liter[s]);
			printf("Baht/Liter : ");
			scanf("%f", &s_bpl[s]);
			printf("Total : %f", s_total[s] = s_liter[s] * s_bpl[s]);
			s++;
		}
		else if (manu == 3)
		{
			for (n = 0; n <= p; n++)
			{
				p_liter_total = p_liter_total + p_liter[n];
			}
			n = 0;
			for (n = 0; n <= s; n++)
			{
				s_liter_total = s_liter_total + p_liter[n];
			}
			n = 0;
			gas_balance = p_liter_total - s_liter_total;
			n = 0;
			printf("Gas Balance: %f ", &gas_balance);
			for (n = 0; n <= p; n++)
			{
				p_remaining_cost[n] = p_liter[n] * p_bpl[n];
				printf("%s %f@%f total of %f\n", date[n], p_liter[n], p_bpl, p_remaining_cost[n]);
			}
			for (n = 0; n <= p; n++)
				p_remaining_cost_total = p_remaining_cost_total + p_remaining_cost[n];
			printf("Net remaining cost: %f \n", &p_remaining_cost_total);
			printf("Sale Report: \n");
			for (n = 0; n <= s; n++)
			{
				s_remaining_cost[n] = s_liter[n] * s_bpl[n];
				printf("%s %f@%f total of %f\n", s_date[n], s_liter[n], s_bpl, s_remaining_cost[n]);
			}
			for (n = 0; n <= p; n++)
				s_remaining_cost_total = s_remaining_cost_total + s_remaining_cost[n];
			printf("Net pofit: %f \n", &s_remaining_cost_total);
		}
		else if (manu == 4)
		{
			  printf("=====Thank You======\n");
			  }
		else
			loop = 0;
	}
	system("pause");
}