Define a class called user_details and the class will have at least five member

Question

Define a class called user_details and the class will have at least five member

variables to store first name, last name, date of birth, age, and phone number.

Include at least six member functions: a constructor to set first name, last name, date

of birth, age, and phone number. An overloaded constructor to set first name, last

name, date of birth, and phone number. The age is computed from the date of birth

when the age is not given. Second overloaded constructor to set first name, last

name, date of birth, and age. The phone number is set to all zeroes when the phone

number is not given. A function to compute the age from date of birth. A function to

validate date of birth and age. A function to validate the number of digits in a phone

number. Write a C++ program that uses this class to input the user details, validate

the details, and prints the formatted details. A format value can be used to input

different values. Format 1 can be used to input all details, 2 for all details without age,

and 3 for all details without phone number. Use time() library to get the current date.

Input/Output:

1 Mike Tyson 06301966 47 3343456453

Mike Tyson 06/30/1966 47 334-345-6453

1 Victor Oladipo 05041992 22 4554355353

Wrong age for Victor Oladipo 05/04/1992 22 455-435-5353

2 Charlie Hunnam 04101980 322333222

Wrong phone number for Charlie Hunnam 04/10/1980 33 32-233-3222

3 Tom Cruise 07031962 51

Tom Cruise 07/03/1962 51 000-000-0000

Explanation / Answer

#include <iostream>

#include <cstring>

#include <ctime> /* time_t, struct tm, difftime, time, mktime */

using namespace std;

class user_details{

public:

string first_name,last_name;

int age,phn,dob;

time_t timer;

struct tm y2k;

double seconds;

int result;

user_details(string first_name_,string last_name_,int dob_,int age_,int phn_)

{

first_name=first_name_;

last_name=last_name_;

dob=dob_;

age=age_;

phn=phn_;

//age checking

time(&timer); /* get current time; same as: timer = time(NULL) */

y2k.tm_hour = 0; y2k.tm_min = 0; y2k.tm_sec = 0;

y2k.tm_year = dob_%10000;

dob_=dob_/10000;

y2k.tm_mon = dob_%100;

dob_=dob_/100;

y2k.tm_mday = dob_%100;

seconds = difftime(timer,mktime(&y2k));

if(age!=(int)seconds/86400)

cout<<" Wrong age for ";

//date of birth checking

  

if(F_validDate(y2k.tm_mday,y2k.tm_mon,y2k.tm_year)==0)

cout<<" Wrong date of birth for ";

//phn number checking

if(F_validphn(phn)==0)

cout<<" Wrong phone number for ";

}

user_details(string first_name_,string last_name_,int dob_,int phn_)

{

first_name=first_name_;

last_name=last_name_;

dob=dob_;

phn=phn_;

time(&timer);

y2k.tm_hour = 0; y2k.tm_min = 0; y2k.tm_sec = 0;

y2k.tm_year = dob_%10000;

dob_=dob_/10000;

y2k.tm_mon = dob_%100;

dob_=dob_/100;

y2k.tm_mday = dob_%100;

seconds = difftime(timer,mktime(&y2k));

age=(int)seconds/86400;

//date of birth checking

  

if(F_validDate(y2k.tm_mday,y2k.tm_mon,y2k.tm_year)==0)

cout<<" Wrong date of birth for ";

//phn number checking

if(F_validphn(phn)==0)

cout<<" Wrong phone number for ";

}

int F_validphn(int phn)

{

int count=0;

while(phn>0)

{

phn/=10;

count++;

}

if(count==10)

return 1;

else

return 0;

}

  

int F_validDate(int day,int month,int year)

{

switch(month)

{

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12:

if(day>=1&&day<=31)

return 1;

else

return 0;

  

case 4:

case 6:

case 9:

case 11:

if(day>=1&&day<=30)

return 1;

else

return 0;

case 2:

if(day>=1&&(year%4!=0&&day<=28)||(year%4==0&&day<=29))

return 1;

else

return 0;

} return 0;

}

};

int main()

{

string data,first_name,last_name;

int age=0,phn=0,dob=0;

user_details obj;

char *c;

getline(cin,data,' ');

c=&data+2;

while(*c!=' ')

{

first_name+=*c;

c++;

}

c++;

while(*c!=' ')

{

last_name+=*c;

c++;

}

c++;

while(*c!=' ')

{

dob=dob*10+((int)(*c)-48);

c++;

}

if(data[0]=='1')

{

  

c++;

while(*c!=' ')

{

age=age*10+((int)(*c)-48);

c++;

}

c++;

while(*c!='')

{

phn=phn*10+((int)(*c)-48);

c++;

}

obj=new user_details(first_name,last_name,dob,age,phn);

}else if(data[0]=='2')

{

c++;

while(*c!='')

{

phn=phn*10+((int)(*c)-48);

c++;

}

obj=new user_details(first_name,last_name,dob,phn);

}else if(data[0]=='3')

{

c++;

while(*c!=' ')

{

age=age*10+((int)(*c)-48);

c++;

}

obj=new user_details(first_name,last_name,dob,age,0000000000);

}

//printing

cout<<obj.first_name<<" "<<obj.last_name<<" ";

cout<<dob%1000000<<"/";

dob-(dob/1000000)*1000000;

cout<<dob%10000<<"/";

dob-(dob/10000)*10000;

cout<<dob<<" ";

cout<<obj.age<<" ";

phn=obj.phn;

cout<<phn%10000000<<"-";

phn-(phn/10000000)*10000000;

cout<<phn%10000<<"-";

phn-(phn/10000)*10000;

cout<<phn<<endl;

}

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