simple textfile without using structure

[kezia]

hi everyone pls do me a favor i worked for my project using a simple textfile pass by parameter without using a sturcture...the ff. code must like this
add record, update record, search record, delete record. the pls add a code that you like to add, update, search, delete a record? thank you so much guy

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

struct IDDATA {

char ID[50],
Fname[50],
Mname[50],
Lname[50],
course[50],
college[50];

};

void AddNewRecord(FILE * fp, struct IDDATA e, long int IDDATASIZE)
{
struct IDDATA tmp;
clrscr();
printf("ADD NEW RECORD FORM\n");
printf("ID No. : \n ");
gets(e.ID);
printf("First Name : ");
gets(e.Fname);
printf("Middle Name : ");
gets(e.Mname);
printf("Last Name : ");
gets(e.Lname);
printf("Course : ");
gets(e.course);
printf("College : ");
gets(e.college);



fseek(fp,0,SEEK_END);
fwrite(&e,IDDATASIZE,1,fp);

printf("Add Another Record? ( Y=[yes] or N=[no] ) : ");
fflush(stdout);
scanf("%c",&choice);
fclose(fp);
}


void SortID(struct IDDATA temp[], int tempsize)
{
int a, b, c=0;
struct IDDATA tmp;

for (a = 1; a<tempsize ; a++) {
for (b = 0; b < tempsize - 1; b++)
{
if (atoi(temp[b].ID) > atoi(temp[b + 1].ID)) // compares current array and next array has the highest value
{
tmp = temp[b]; // temporarily store highest value to tmp variable
temp[b] = temp[b + 1]; // select next array and store value from next array.
temp[b + 1] = tmp; // sets the current array as has the highest value
}
}
}

for(c=0; c<tempsize; c++)
{
printf("%s",temp[c].ID);
printf("\t%s",temp[c].Fname);
printf("\t\t%s",temp[c].Mname);
printf("\t\t%s",temp[c].Lname);
printf("\t\t%s",temp[c].course);
printf("\t%s\n",temp[c].college);
}

}

void DisplayRecord(FILE * fp, struct IDDATA e, long int IDDATASIZE)
{
struct IDDATA idbase[100];
int idc =0;
clrscr();
rewind(fp);
printf("DISPLAY RECORD\n\n");
printf("ID No.");
printf("\tFirst Name");
printf("\tMiddle Name");
printf("\tLast Name");
printf("\tCourse");
printf("\tCollege\n");

while(fread(&e,IDDATASIZE,1,fp)==1){


idbase[idc] = e;
idc++;
}

SortID(idbase, idc);
fclose(fp);




}



void main()
{

clrscr();
FILE *fp, *ft;

int choice=0;



struct IDDATA e;

long int IDDATASIZE;

fp=fopen("c:/IDBASE.txt","rb+");
if(fp==NULL) {

fp=fopen("c:/IDBASE.txt","wb+");

if(fp==NULL)
{
puts("Cannot open file");
return;
}
}

char number[50];

IDDATASIZE = sizeof(e);


printf("Welcome To Student ID System\n");
printf("1. Add New Record\n");
printf("2. Display Record\n");
printf("3. Update Record\n");
printf("4. Search Record\n");
printf("5. Delete Record\n");
printf("6. Exit\n");
printf("\nEnter Choice: ");
scanf("%d",&choice);

switch(choice)
{
case 1:
AddNewRecord(fp, e, IDDATASIZE);
break;

case 2:
DisplayRecord(fp, e, IDDATASIZE);
break;
}




getch();





}

[Ericool]

Why void main()? Why no structures is it supposed to be without structure or class?

[kezia]

bcoz my instructor want it to be simple . . :(
pls help me

[Ericool]

I will try it on my compiler then..

[kezia]

thank you sir
just update me

[Ericool]

try this ...

#include <iostream>
#include <string>
#include <fstream>
#include <vector>

struct RecordData
{
	unsigned int m_id;
	std::string m_firstName;
	std::string m_middleName;
	std::string m_lastName;
	std::string m_courseName;
	std::string m_collegeName;
	friend std::ostream& operator << (std::ostream& os, const RecordData& record)
	{
		return os 
			<< record.m_id << " "
			<< record.m_firstName << " "
			<< record.m_middleName << " "
			<< record.m_lastName << " "
			<< record.m_courseName << " "
			<< record.m_collegeName << " "
			<< std::endl;
	}
	friend std::istream& operator >> (std::istream& is, RecordData& record)
	{
		return is
			>> record.m_id
			>> record.m_firstName
			>> record.m_middleName
			>> record.m_lastName
			>> record.m_courseName
			>> record.m_collegeName;
	}
};

std::vector<RecordData> g_records;

std::fstream g_fileStream("IDBASE.txt");

//will write records in the file append
void addNewRecord(void)
{
	if (!g_fileStream.is_open())
	{
		g_fileStream.open("IDBASE.txt", std::ios::out | std::ios::app);

		if (!g_fileStream.good())
		{
			std::cout << "could not open this file\n";
			return;
		}
	}
	unsigned int id;
	std::string fName;
	std::string mName;
	std::string lName;
	std::string crsName;
	std::string colName;
	std::cin >> id;
	std::cin >> fName;
	std::cin >> mName;
	std::cin >> lName;
	std::cin >> crsName;
	std::cin >> colName;
	RecordData record = {id,fName,mName,lName,crsName,colName};
	if (g_fileStream.is_open())
	{
		g_fileStream << record;
	}
}
//will read all content of the file and will store it in records
void displayRecords(void)
{
	if (g_fileStream.is_open())
	{
		g_fileStream.close();
		g_fileStream.open("IDBASE.txt", std::ios::in);
		if (!g_fileStream.good())
		{
			std::cout << "could not open this file\n";
			return;
		}
		while (!g_fileStream.eof())
		{
			RecordData record;
			g_fileStream >> record;
			g_records.push_back(record);
		}

		g_fileStream.close();

		for (int i = 0; i < g_records.size(); i)
			std::cout << (const RecordData&)g_records[i ++] ;
	}
}

int main(int argc , char* argv[])
{
	for (;;)
	{
		int choice = 0;
		do
		{
			std::cout
				<< "Welcome To Student ID System\n"
				<< "1. Add New Record\n"
				<< "2. Display Record\n"
				<< "3. Update Record\n"
				<< "4. Search Record\n"
				<< "5. Delete Record\n"
				<< "6. Exit\n"
				<< "\nEnter Choice: ";
			std::cin >> choice;
		} while (choice < 1 || choice > 6);
		switch (choice)
		{
		case 1:
			addNewRecord();
			break;
		case 2:
			displayRecords();
			break;
		case 3:
			break;
		case 4:
			break;
		case 5:
			break;
		case 6:
			if (g_fileStream.is_open())
				g_fileStream.close();
			std::cout << "Bye\n";
			return EXIT_SUCCESS;
			break;
		default:
			break;
		}
	}
	return EXIT_SUCCESS;
}

[kezia]

thank you sir. .. .but the error is unable to open file string, iostream, vector ,stream, vector

[Ericool]

I will send you a private mail for that in C code.