Cpp project : Data Base

Cpp project : Data Base

 

 

#include<stdlib.h>

#include<iostream>

#include<fstream>

#include<string.h>

#include <string>

using namespace std;

class software {

public:

    char P_name [50];

    char L_name [50];

    char M_name [3][20];

    char D_line [50];

    int Payment;

    ofstream file;

    void input ()

    {

        cout<<"\n Enter Project Name: ";

        cin>>P_name;

        cout<<"\n Enter Project Leader Name: ";

        cin>>L_name;

        for(int i=0;i<3;i++)

          {

            cout<<"\n Member Name"<<i+1<<":";

            cin>>M_name[i];

          }

        cout<<"\n Enter Deadline: ";

        cin>>D_line;

        cout<<"\n Enter The Payment: ";

        cin>>Payment;

    }

    void write()

    {

        file.open("software.txt", ios::app);

        if(file.is_open())

        {

            file<<P_name<<"   "<<" \t"<< L_name<<"   "<<"\t"<< M_name[0]<<"  "<<"\t"<< M_name[1]<<" "<<"\t"<<M_name[2]<<"  "<<"\t"<<D_line<<"  "<<" \t"<<Payment<<endl;

            file.close();

        }

        else

        {

            printf("Error openin file!!");

        }

    }

};

int main () {

    software x;

    fstream file, f1;

    int e;

    int pay;

    char P[50];

    string line;

    do{

        system("color A");

        cout<<"\n DATA BASE";

        cout<<"\n 1.Data Entry";

        cout<<"\n 2.Project Display";

        cout<<"\n 3.Update Project Info";

        cout<<"\n 4.Quit\n";

        cin>>e;

        if(e == 1)

        {

            system("cls");

                int size;

                cout<<"\n How Many Project: ";

                cin>>size;

                for(int i=0;i<size;i++)

                {

                    x.input();

                    x.write();

                }

        }

        else if(e == 2)

        {

            system("cls");

            file.open("software.txt", ios::in);

            if(file.is_open())

            {

               cout<<"Project_Name  Leader_Name   Member1   Member2  Member3  Deadline    Payment"<<endl;

               cout<<"============================================================================="<<endl;

            while ( file.good() )

                {

                  getline (file,line);

                  cout << line << endl;

                }

                file.close();

            }

        }

        else if(e == 3)

        {

            system("cls");

            cout<<"\n Enter The Project Name That You Want To Update:";

            cin>>P;

            string data[1000];

            char p_name[200];

            int cnt=0;

            bool is_updated = false;

            file.open("software.txt", ios::in);

            if(file.is_open())

            {

                while ( file.good() )

                {

                    getline (file,data[cnt]);

                    sscanf(data[cnt].c_str(), "%s", &p_name);

                    if(strcmp(P, p_name) == 0)

                    {

                        int up;

                        cout<<"\n Update Project press 1\n";

                        cin>>up;

                        char p_n[100], l_name[100], m_name[3][100], d_line[100], p[100];

                        if(up==1)

                        {

                            cout<<"\n Previous Project: "<<p_name;

                            cout<<"\n New Project:";

                            cin>>P;

                            sscanf(data[cnt].c_str(), "%s %s %s %s %s %s %s", &p_n, &l_name, &m_name[0], &m_name[1], &m_name[2], &d_line, &p);

                            line =  string(P)+string("    ")+

                                    string("\t")+string(l_name)+string("   ")+

                                    string("\t")+string(m_name[0])+string("  ")+

                                    string("\t")+string(m_name[1])+string("  ")+

                                    string("\t")+string(m_name[2])+string("  ")+

                                    string("\t")+string(d_line)+string("  ")+

                                    string("\t")+string(p);

                            data[cnt] = line;

                            is_updated = true;

                        }

                    }

                    cnt++;

                }

                file.close();

                if(is_updated)

                {

                    int k;

                    file.open("software.txt", ios::out);

                    if(file.is_open())

                    {

                        for(k=0; k<=cnt; k++)

                        {

                            file<<data[k]<<endl;

                        }

                    }

                    file.close();

                    cout<<"Project updated!"<<endl;

                }

            }

        }

    }

    while(e!=4);

    return 0;

}