Thread: need help with writing to text file / reading from text file

Hi,

I have an array of structures allowing user to enter info on 5 stocks. I have calculated initial cost, current cost, and profit. I have also bubble sorted the array of structures alphabetically by stock name and printed sorted array.

PROBLEM: I'm trying to save array of structures to a text file, retrieve it and then print the text file. I've successfully saved to the text file, but when I have the program retrieve the text file and print out the file, I get a problem. Why is the purchase date always being changed to "purchase" instead of staying as the date that is correctly listed in the text file?

Code:

#include<stdio.h>
#include<string.h>
#define SIZE 5

struct Stock
{
	char stock_name[9], purchase_date[9];
	int num_shares;
	float buying_price, current_price, yearly_fees, initial_cost, current_cost, profit;
};

void load(struct Stock s[], int n)
{
	for(int i=0; i<n; i++)
	{
		printf("Enter stock name: ");
		gets(s[i].stock_name);
	
		printf("Enter purchase date: ");
		gets(s[i].purchase_date);

		printf("Enter number of shares: ");
		scanf("%d", &s[i].num_shares);

		printf("Enter buying price per share: ");
		scanf("%f", &s[i].buying_price);

		printf("Enter current price per share: ");
		scanf("%f", &s[i].current_price);

		printf("Enter yearly fees: ");
		scanf("%f", &s[i].yearly_fees);
		
		printf("\n");
		
		s[i].initial_cost = s[i].num_shares * s[i].buying_price;
		s[i].current_cost = s[i].num_shares * s[i].current_price;
		s[i].profit = s[i].current_cost - s[i].initial_cost - s[i].yearly_fees;	

		fflush(stdin);
	}
}

void sortStock(Stock s[], int n)
{
	int i, j;
	char t[9];

	for(i=0; i<n-1; i++)
		for(j=0; j<n-1; j++)
			if (strcmp(s[j].stock_name, s[j+1].stock_name)>0)
			{
				strcpy(t, s[j].stock_name);
				strcpy(s[j].stock_name, s[j+1].stock_name);
				strcpy(s[j+1].stock_name, t);
			}
}

void saveText(Stock s[], int n)
{
	int j;
	FILE *f;
	f=fopen("c:\\stock_data.txt","w");
	
	for(j=0; j<n; j++)
	{
		fprintf(f, "%s\n", s[j].stock_name);
		fprintf(f, "Purchase Date: %s\n", s[j].purchase_date);
		fprintf(f, "Intial Cost: $%0.2f\n", s[j].initial_cost);
		fprintf(f, "Current Cost: $%0.2f\n", s[j].current_cost);
		fprintf(f, "Profit: $%0.2f\n\n", s[j].profit);
	}

	fclose(f);
}

void retText(struct Stock s[], int n)
{
	FILE *f;
	int j;
	
	f=fopen("c:\\stock_data.txt","r");
	for(j=0; j<n; j++)
	{
		fgets(s[j].stock_name, sizeof(s[j].stock_name), f);
		fgets(s[j].purchase_date, sizeof(s[j].purchase_date),f);
		fscanf(f, "%f %f %f\n", s[j].initial_cost, s[j].current_cost, s[j].profit);		
	} 

	fclose(f);
}
void print(Stock s[], int n)
{
	for(int j=0; j<n; j++)
	{
		printf("Stock Name: %s", s[j].stock_name);
		printf("\nPurchase Date: %s\n", s[j].purchase_date);
		printf("Initial Cost: $%0.2f\n", s[j].initial_cost);
		printf("Current Cost: $%0.2f\n", s[j].current_cost);
		printf("Profit: $%0.2f\n\n", s[j].profit);
	}
}

void main()
{
	Stock s[SIZE];
	load(s, SIZE);

	sortStock(s, SIZE); 
	print(s, SIZE);

	saveText(s, SIZE);
	retText(s, SIZE);
	print(s, SIZE);
}