Thread: Help, File I/O problem

Hi, writing data in a structure to file. That seems to be going fine. When I read it back though the last record is getting duplicated, so I get a double output of it to screen an it also doubles in calculations. Any suggestions? Below are the two functions I am using.

Code:

void add_customer()
{
	struct customer new_cust={0,"",0,0};
	
	logo();
	
	if((cfPtr=fopen("cust_file.txt","r+"))==NULL)
	{
		printf("File could not be opened.\n");
	}
	else
	{
		printf("\n\nNew Customer Account                Number:\t%d\n\n", cust_counter);
		Sleep(1500);
		
		fseek(cfPtr,(cust_counter-1)*sizeof(struct customer),SEEK_SET);

		fread(&new_cust, sizeof(struct customer),1,cfPtr);

		if(new_cust.acct_num!=0)		//Validation to avoid account overwrite
		{
			printf("\nAccount %d already contains information.\n",new_cust.acct_num);
			stall();
		}
		else
		{
		logo();
		printf("\n\nEnter Customer Name\n\n?");
		fscanf(stdin,"%s",new_cust.cust_name);

		new_cust.acct_num=cust_counter;

		fseek(cfPtr,(new_cust.acct_num-1)*sizeof(struct customer), SEEK_SET);
			
		fwrite(&new_cust, sizeof(struct customer),1,cfPtr);
		fclose(cfPtr);
		cls();
		}
	}

}

void disp_cust_record()
{
	if((cfPtr=fopen("cust_file.txt","r"))==NULL)
	{
		printf("File could not be opened.\n");
	}
	else
	{
		logo();			//Prints a logo
		printf("\n\n%-6s%-16s%-11s%15s\n", "Acct", "Customer Name", "B_Code Start", "B_Code End");

		while(!feof(cfPtr))
		{
			fread(&new_cust,sizeof(struct customer),1,cfPtr);
			//////////////////////////////////////////>>>>>>>>>>>><<<<<<<<<<<<
			if(new_cust.acct_num!=0)
			{
				printf("%-6d%-16s%-10d%10d\n", new_cust.acct_num, 
				new_cust.cust_name, new_cust.barcode_start, new_cust.barcode_end);
			}
		}	
		fclose(cfPtr);			
		stall();		//Generates a pause
	}
}

I'd really appreciate help here, new to File I/O and battling this all week.
Thanks,

H

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