CSI 250L Lab 4, Spring 2012
American University of Science and Technology · Programming II Lab · 4 pages · Dr. Saeed Raheel
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American University of Science & Technology
Department Of Computer Science
CSI 250L – Computer Programming-II Lab
Spring 2011/2012
Lab Work 4
Problem1:
Trace the following program:
a-
#include <iostream>
using namespace std;
class Time {
private:
int hour, min;
public:
Time(int h, int m)
{hour = h; min = m;}
Time() {hour = 0; min = 0;}
void setHour(int x)
{
cout << "Set hour" << endl;
if (x>12) hour = 12;
else hour = x;
}
void setMin(int x)
{
cout << "Set min" << endl;
if (x>59) min= 0;
else min = x;
}
int getHour() {return hour;}
int getMin() {return min;}
};
int main()
{
Time t1;
t1.setHour(8);
t1.setMin(23);
cout<<"the object t1 time is:\
n";
cout << t1.getHour() << endl;
cout << t1.getMin() << endl;
Time t2 = t1;
cout<<"the object t2 time is:\
n";
cout << t2.getHour() << endl;
cout << t2.getMin() << endl;
Time t3(t2.getHour()+1 ,
t2.getMin()+2);
cout<<"the object t3 time is:\
n";
cout << t3.getHour() << endl;
cout << t3.getMin() << endl;
system("pause");
return 0;
}
1
Problem 2:
a-
#include <iostream>
#include <cstring>
using namespace std;
class Student
{ private:
char name[30];
int age;
char gender;
public:
void setName (char *);
void setAge (int);
void setGender (char);
void print ();
};
void setName(char * n)
{
strncpy (name, n);
}
int Student::setAge (int a)
{
a = age;
}
Student:: void setGender (char g)
{
gender = g;
}
void Student::print()
{
cout << name, age, gender;
}
void Student::display()
{
cout << "This function
does not belong to the class.";
}
2
Problem 3:
Type the following program then apply the below listed steps:
#include <iostream>
#include <cstring>
using namespace std;
class Car{
public:
Car(char []="No value ", char[]="No value " ,int=2000, int=0);
void print();
private:
char brand[10];
char color[10];
int year, price;
};
Car::Car(char * b, char * c, int y, int p)
{
strcpy(brand, b);
strcpy(color, c);
year = y;
price = p;
}
int main()
{
Car c("BMW", "Black", 2002, 13000);
system ("pause");
return 0;
}
1. Compile, link then execute the program.
2. Modify the class definition and implementation to include set and get functions for
the private data members.
3. Modify the class definition and implementation to include a print function to print
information about the private data members.
4. Modify the program to store the data about N cars. (N is the first input by the user).
Then output the data about the cars with price above 50000.
3
Problem 4:
Write the class definitions and implementations for the following class specifications.
Use separate files for the definition and implementation.
Publisher
Attributes
ID: a number to identify each publisher.
Name: a string of characters. ( dynamic allocation)
Location: a string of 50 characters.
Type: an integer to specify the type of the publisher, the type can
be 1, 2 or 3.
Methods
Constructor(default values)
Print: a function, to print the information about a
publisher in the following format:
ID = 111, Name = Print_Shop, Location = Lebanon, Type = 1.
Destructor.
Set and get functions.
Write a c++ program to store data about N publishers. The program should do the
following:
Output the information about all publishers of type 1.
Display a sorted list of publisher according to the location.
Change the location “Beirut” to “Saida”.
Display the information about a publisher knowing his ID.
4