phoneLog1 20180105110054 +12062812000 5912 20171210091233 +33140205990 364 20171

Question

phoneLog1
20180105110054 +12062812000 5912
20171210091233 +33140205990 364
20171129145316 +85223677065 180

phoneLog2
12 +12068372045 abc
123456789ABCDE 12068372045 0000000000

output1.txt

File Name:Time Country Phone Number Duration   
01-05-2018 11:00:54 1 (206)-281-2000 98:32
12-10-2017 09:12:33 33 01 40 20 59 90 6:04
11-29-2017 14:53:16 852 2367 7065 3:00

Goal: Your assignment is to write a C++ program to read in a list of phone call records from a file, and output them in a more user-friendly format to the standard output (cout). In so doing, you will practice using the ifstream class, I/O manipulators, and the string class. File format: Here is a example of a file containing three phone call records phonelog1.bt - Notepad File Edit Format View Help 20180105110054 +12062812000 5912 20171210091233 +33140205990 364 20171129145316 +85223677065 180 Each line records one phone call. As you can see, each line contains 3 different fields: start, E.164, and duration Here is an explanation of these three fields: Start: A 14-digit field giving the year, month, day, hour, minute, and second when the call was started. The format is yyyymmddhhmmss. Military time is used for the hour. For instance, 20180101011020, means the date was January 1, 2018 and the time was 20 seconds past 1:20am. E. 164: A 12-character field starting with a sign followed by 11 digits. This field specifies the phone number in E. 164 format. The first 1-3 digits after the + sign specify the country code of the phone number, and the meaning of the remaining digits is specific to the country or region represented by the co untry code To limit the scope of this assignment we will only consider E. 164 phone numbers from the following regions CC Region North America (US, Canada, and some Caribbean islands) France Hong Kong SAR 852 We've picked these regions because they have simple 12-digit E.164 formats Duration: This field consists of a variable number of digits, specifying the number of seconds the call lasted. In this assignment you can assume that a phone log file contains at least one line. In addition, you may assume that each line has exactly three fields and is terminated by an end of line. It is possible that some fields are not formatted correctly. You should not crash because a field is incorrectly formatted. Main Program Here is an example what it should look like when your main program is run on the file above

Explanation / Answer

this is related to it and useful for example

//Telephone Directory

#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include <iomanip.h>
#include <conio.h>

class phoneBook{
char name[20],phno[15];
public:
void getdata();
void showdata();
char *getname(){ return name; }
char *getphno(){ return phno; }
void update(char *nm,char *telno){
strcpy(name,nm);
strcpy(phno,telno);
}
};

void phoneBook :: getdata(){
cout<<" Enter Name : ";
cin>>name;
cout<<"Enter Phone No. : ";
cin>>phno;
}

void phoneBook :: showdata(){
cout<<" ";
cout<<setw(20)<<name;
cout<<setw(15)<<phno;
}

void main(){
phoneBook rec;
fstream file;
file.open("d:\phone.dat", ios::ate | ios::in | ios::out | ios::binary);
char ch,nm[20],telno[6];
int choice,found=0;
while(1){
clrscr();
cout<<" *****Phone Book***** ";
cout<<"1) Add New Record ";
cout<<"2) Display All Records ";
cout<<"3) Search Telephone No. ";
cout<<"4) Search Person Name ";
cout<<"5) Update Telephone No. ";
cout<<"6) Exit ";
cout<<"Choose your choice : ";
cin>>choice;
switch(choice){
case 1 : //New Record
rec.getdata();
cin.get(ch);
file.write((char *) &rec, sizeof(rec));
break;

case 2 : //Display All Records
file.seekg(0,ios::beg);
cout<<" Records in Phone Book ";
while(file){
file.read((char *) &rec, sizeof(rec));
if(!file.eof())
rec.showdata();
}
file.clear();
getch();
break;

case 3 : //Search Tel. no. when person name is known.
cout<<" Enter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(nm,rec.getname())==0)
{
found=1;
rec.showdata();
}
}
file.clear();
if(found==0)
cout<<" ---Record Not found--- ";
getch();
break;

case 4 : //Search name on basis of tel. no
cout<<" Enter Telephone No : ";
cin>>telno;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(telno,rec.getphno())==0)
{
found=1;
rec.showdata();
}
}
file.clear();
if(found==0)
cout<<" ---Record Not found--- ";
getch();
break;

case 5 : //Update Telephone No.
cout<<" Enter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
int cnt=0;
while(file.read((char *) &rec, sizeof(rec)))
{
cnt++;
if(strcmp(nm,rec.getname())==0)
{
found=1;
break;
}
}
file.clear();
if(found==0)
cout<<" ---Record Not found--- ";
else
{
int location = (cnt-1) * sizeof(rec);
cin.get(ch);
if(file.eof())
file.clear();

cout<<"Enter New Telephone No : ";
cin>>telno;
file.seekp(location);
rec.update(nm,telno);
file.write((char *) &rec, sizeof(rec));
file.flush();
}
break;
case 6 : gotoout;
}
}

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