// Name.h #ifndef __NAME_H__ #define __NAME_H__ #include <iostream> #include <string> using namespace std; #define MAXLENGTH 12...
// Name.h
#ifndef __NAME_H__
#define __NAME_H__
#include <iostream>
#include <string>
using namespace std;
#define MAXLENGTH 12
#define NAME_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-'"
namespace Errors
{
struct InvalidName { };
}
class Name
{
public:
Name ( string first_name = "", string last_name = "");
string first() const;
string last() const;
void set_first( string fname );
void set_last( string lname);
friend ostream& operator<< ( ostream & os, Name name );
friend bool operator== (Name name1, Name name2 );
friend bool operator< (Name name1, Name name2 );
friend bool operator> (Name name1, Name name2 );
private:
string fname;
string lname;
};
#endif /* __NAME_H__ */
// Name.cpp
#include "name.h"
#include <iomanip>
Name::Name ( string first_name, string last_name):
fname(first_name), lname(last_name) {}
ostream& operator<< ( ostream& os, Name name )
{
os << setw(MAXLENGTH) << left;
os << name.fname << setw(MAXLENGTH) << left << name.lname;
return os;
}
string Name::first() const
{
return fname;
}
string Name::last() const
{
return lname;
}
void Name::set_first( string first )
{
if ( first.length() <= MAXLENGTH &&
first.npos == first.find_first_not_of(NAME_CHARS) )
fname = first;
else {
fname = "";
throw(Errors::InvalidName() );
}
}
void Name::set_last( string last )
{
if ( last.length() <= MAXLENGTH &&
string::npos == last.find_first_not_of(NAME_CHARS) )
lname = last;
else {
lname = "";
throw(Errors::InvalidName() );
}
}
bool operator== (Name name1, Name name2 )
{
if ( name1.lname == name2.lname &&
name1.fname == name2.fname
)
return true;
else
return false;
}
bool operator< (Name name1, Name name2 )
{
if ( ( name1.lname < name2.lname ) ||
( name1.lname == name2.lname &&
name1.fname < name2.fname )
)
return true;
else
return false;
}
bool operator> (Name name1, Name name2 )
{
if ( ( name1.lname > name2.lname ) ||
( name1.lname == name2.lname &&
name1.fname > name2.fname )
)
return true;
else
return false;
}
---------------------------------------------------------------------------------------------
//contant.h
#ifndef _CONTACT_H
#define _CONTACT_H
#include "name.h"
using namespace std;
class Contact
{
public:
Contact ();
Contact (Name person, string tel_num ="", string email_addr ="");
int set (string fname, string lname, string tel_num, string email_addr);
int set ( char* csv_string);
void get_name (Name & fullname);
void get_tel (string & tel_num);
void get_email (string & email_addr);
void set_name (Name fullname);
void set_tel (string tel_num);
void set_email (string email_addr);
string convert2csv ();
friend bool operator> (Contact contact1, Contact contact2);
friend bool operator< (Contact contact1, Contact contact2);
friend bool operator== (Contact contact1, Contact contact2);
friend ostream& operator<< (ostream &, Contact );
friend bool match (Contact contact1, Contact contact2);
private:
Name name;
string telephone;
string email;
bool is_valid_telephone(string tel) const;
};
#endif /* _CONTACT_H */
//contact.cpp
#include <stdio.h>
#include <string.h>
#include "contact.h"
#include "name.h"
#include <iomanip>
#define DIGITS "0123456789"
Contact::Contact (): name("",""), telephone(""), email("") {}
Contact::Contact (Name person, string tel_num, string email_addr):
name(person), telephone(tel_num), email(email_addr) {}
int Contact::set (string fname,
string lname,
string tel_num,
string email_addr)
{
name.set_first(fname);
name.set_last(lname);
telephone = tel_num;
email = email_addr;
return 1;
}
int Contact::set ( char* csv_string)
{
char lname[33];
char fname[33];
char tel_num[11];
char email_addr[128];
char user[128];
char domain[128];
int count;
count = sscanf(csv_string,
"%32[a-zA-Z'-],%32[a-zA-Z'-],%10[0-9],%127s",
fname, lname, tel_num, email_addr );
if ( count < 4 ) {
return 0;
}
else if ( strlen(tel_num) < 10 )
return 0;
else {
name.set_first(fname);
name.set_last(lname);
telephone = tel_num;
count = sscanf(email_addr,"%[^@]@%[a-zA-Z0-9.]",user, domain);
if ( count < 2 )
return 0;
else {
email = email_addr;
return 1;
}
}
}
void Contact::get_name (Name & fullname)
{
fullname.set_first(name.first());
fullname.set_last(name.last());
}
void Contact::get_tel (string & tel_num)
{
tel_num = telephone;
}
void Contact::get_email (string & email_addr)
{
email_addr = email;
}
void Contact::set_name (Name fullname)
{
name.set_first(fullname.first());
name.set_last(fullname.last());
}
void Contact::set_tel (string tel_num)
{
telephone = tel_num;
}
void Contact::set_email (string email_addr)
{
email = email_addr;
}
bool operator> (Contact contact1, Contact contact2)
{
return ( contact1.name > contact2.name );
}
bool operator< (Contact contact1, Contact contact2)
{
return ( contact1.name < contact2.name );
}
bool operator== (Contact contact1, Contact contact2)
{
return ( contact1.name == contact2.name );
}
ostream& operator<< (ostream & out, Contact contact )
{
out << contact.name << setw(12)
<< contact.telephone << setw(127)
<< contact.email << "\n";
return out;
}
string Contact::convert2csv ()
{
char csv[512];
sprintf(csv, "%s,%s,%s,%s", name.first().c_str(), name.last().c_str(),
telephone.c_str(), email.c_str());
return csv;
}
bool match (Contact contact1, Contact contact2)
{
if ( contact1.name.last() != "" && contact2.name.last() != "" ) {
if ( contact1.name.last() != contact2.name.last() )
return false;
}
if (contact1.name.first() != "" && contact2.name.first() != "") {
if ( contact1.name.first() != contact2.name.first() )
return false;
}
if (contact1.telephone != "" && contact2.telephone != "") {
if ( contact1.telephone != contact2.telephone )
return false;
}
if (contact1.email != "" && contact2.email != "") {
if ( contact1.email != contact2.email )
return false;
}
return true;
}
bool Contact::is_valid_telephone(string tel) const
{
if ( tel.npos == tel.find_first_not_of(DIGITS) )
return true;
else
return false;
}
-----------------------------------------
Questions:
----------------------------------------
1. Consider this code snippet:
Name name1("Cassandra", "O'Hara");
Name name2("Smith");
if ( name1 < name2 ) cout << 0 ; else cout << 1
;
On the answersheet, for question 1, list the letters of the
statements below that are true. It is possible
that none are true or several are true.
(a) One or more of these statements results in a compiler
error.
(b) The code compiles correctly but will have a run-time
error.
(c) The code compiles correctly and outputs 0.
(d) The code compiles correctly and outputs 1.
2. True or False. The declaration below results in an error.
Name name3("Gandalf", "The Gray");
On the answersheet, for question 2, write either True or False.
3. True or False. The code below sets the value of the private
member fname of name to "Ben Hur".
Name name;
name.set_first("Ben Hur");
On the answersheet, for question 3, write either True or False.
4. True or False. The statement
#include <iomanip>
can be replaced by
#include "iomanip"
without causing any change to the compiled code. On the
answersheet, for question 4, write either
True or False.
Homework Answers
1) (d) The code compiles correctly and outputs
1.
2) False, it does not result in
error
3) False, Results in ERROR because empty space is
NOT Accepted.
4) True, it can be replaced
See Image for more clarity
Thanks, PLEASE COMMENT
Add Answer to:
// Name.h
#ifndef __NAME_H__
#define __NAME_H__
#include <iostream>
#include <string>
using namespace std;
#define MAXLENGTH 12...
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-----------------
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#define LEX_H_
#include <string>
#include <iostream>
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using std::istream;
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// keywords
PRINT, BEGIN, END, IF, THEN,
// an identifier
IDENT,
// an integer and string constant
ICONST, RCONST, SCONST,
// the operators, parens, semicolon
PLUS, MINUS, MULT, DIV, EQ, LPAREN, RPAREN, SCOMA, COMA,
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Token token;
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#define ANIMAL_H_
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{
public:
Animal();
Animal(std::string, bool domestic=false, bool
predator=false);
std::string getName() const;
bool isDomestic() const;
bool isPredator() const;
void setName(std::string);
void setDomestic();
void setPredator();
protected: // protected so that derived class can directly
access them
std::string name_;
bool domestic_;
bool predator_;
};
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}
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PRINT, BEGIN, END, IF, THEN,
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IDENT,
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ICONST, RCONST, SCONST,
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PLUS, MINUS, MULT, DIV, EQ, LPAREN, RPAREN, SCOMA, COMA,
// any error returns this token
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Token token;
string lexeme;
int lnum;
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Animal();
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bool domestic_;
bool predator_;
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}
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