C Programming in structure and strings A library has a sorte

C++ Programming in structure and strings

A library has a sorted list, sorted by last name, of its members in a file with the following information for each member: First name, Last name, Member ID, and Telephone Number. The list contains 100 members. Write a program that reads the data from the file and store it in an array of structures.  

File name: library_database.txt

Nola       Given       554097   205-588-2540
David       Glowacki   672020   579-619-2775
Elbert       Gorman       867054   896-273-7996
Sheryl       Gregorio   406150   629-726-4934
Racquel       Hamiton       415884   229-481-9483
Alease       Hamlin       604458   890-994-8622
Loralee       Hargrove   366958   585-386-9775
Ruthann       Harvell       345462   523-975-0893
Eliseo       Hendershott   844053   790-162-9692
Danyel       Hinson       813408   787-389-4715

The program should also have a function that allows a librarian to retrieve a user’s information based on his/her last name or member ID. So, the program should have a menu-driven user interface. In case of the last name search all members that match should be displayed. If no members match, a message saying so should be displayed.

Solution

Library.CPP :

#include<iostream.h>

#include<fstream.h>

#include<conio.h>

#include<string.h>

void retrieve_data(char[]);

struct user{

char FirstName[20];

char LastName[20];

char memberID[20];

char TelephoneNumber[20];

}u[100];

int main(){

clrscr();

char uid[20];

ifstream infile;

infile.open(\"library_database.txt\");

for(int i=0;i<10;i++){

infile>>u[i].FirstName;

infile>>u[i].LastName;

infile>>u[i].memberID;

infile>>u[i].TelephoneNumber;

cout<<u[i].FirstName<<\" \"<<u[i].LastName<<\" \"<<u[i].memberID<<\" \"<<u[i].TelephoneNumber<<endl;

}

cout<<\"\ Enter User LastName or MemberID:\";

cin>>uid;

retrieve_data(uid);

infile.close();

getch();

return 0;

}

void retrieve_data(char uid[]){

int flag=0;

for(int i=0;i<100;i++){

if(!strcmp(uid,u[i].LastName)||!strcmp(uid,u[i].memberID)){

cout<<endl<<u[i].FirstName<<\" \"<<u[i].LastName<<\" \"<<u[i].memberID<<\" \"<<u[i].TelephoneNumber;

flag++;

}

}

if(flag==0){

cout<<\"No member should be displayed\"<<endl;

}

}

library_database.txt :

Nola Given 554097 2055882540

David Glowacki 672020 5796192775

Elbert Gorman 867054 8962737996

Sheryl Gregorio 406150 6297264934

Racquel Hamiton 415884 2294819483

Alease Hamlin 604458 8909948622

Loralee Hargrove 366958 5853869775

Ruthann Harvell 345462 5239750893

Eliseo Hendershott 844053 7901629692

Danyel Hamiton 813408 7873894715

Sample Input & Output :

Nola Given 554097 2055882540

David Glowacki 672020 5796192775

Elbert Gorman 867054 8962737996

Sheryl Gregorio 406150 6297264934

Racquel Hamiton 415884 2294819483

Alease Hamlin 604458 8909948622

Loralee Hargrove 366958 5853869775

Ruthann Harvell 345462 5239750893

Eliseo Hendershott 844053 7901629692

Danyel Hamiton 813408 7873894715

Enter User LastName or MemberID:Hamiton

Racquel Hamiton 415884 2294819483

Danyel Hamiton 813408 7873894715