C++ code showing Hierarchical Inheritance to calculate Area

This is the solution for T.U.2068 Q.N.3

#include <iostream>

using namespace std;

class Shape
{
protected:
    int A;
public:
    Shape()
    {
        A=0;
    }
    void show();
};

class Triangle:public Shape
{
    int h, b;
public:
    void Geth();
    void Getb();
    void Showhb();
    void CalTriA();
};

class Rectangle:public Shape
{
    int l, b;
public:
    void Getl();
    void Getb();
    void Showlb();
    void CalRecA();
};

void Shape::show()
{
    cout << endl << "Area=" << A << endl ;
}

void Triangle::Geth()
{
    cout << endl << "Enter height of the triangle:" ;
    cin >> h ;
}

void Triangle::Getb()
{
    cout << endl << "Enter base of the triangle:" ;
    cin >> b ;
}

void Triangle::Showhb()
{
    cout << endl << "Triangle:" << endl ;
    cout << "Height=" << h << endl << "Base=" << b << endl ;
}

void Triangle::CalTriA()
{
    A = (h*b)/2;
}

void Rectangle::Getl()
{
    cout << endl << "Enter length of Rectangle:" ;
    cin >> l ;
}

void Rectangle::Getb()
{
    cout << endl << "Enter breadth of Rectangle:" ;
    cin >> b ;
}

void Rectangle::Showlb()
{
    cout << endl << "Rectangle" << endl ;
    cout << "Length=" << l << endl << "Breadth=" << b << endl ;
}

void Rectangle::CalRecA()
{
    A = l*b ;
}


int main()
{
    Triangle T;
    T.Geth();
    T.Getb();
    Rectangle R;
    R.Getl();
    R.Getb();
    T.Showhb();
    T.CalTriA();
    T.show();
    R.Showlb();
    R.CalRecA();
    R.show();
    return 0;
}

C++ code showing Inheritance and Data Conversion

This is the solution for T.U. 2067 Q.N.3

#include <iostream>

using namespace std;

class clock
{
protected:
    int hr, min, sec ;
public:
    clock()
    {
        hr = min = sec = 0;
    }
    clock(int x)
    {
        hr = min = sec = x ;
    }
    void Show();
};

class wall_clock:public clock
{
    int TotalTime;
public:
    wall_clock():clock()
    {
        TotalTime = 0 ;
    }
    wall_clock(int x):clock(x)
    {

    }
    void Add(int, int, int);
    void ShowTime();
};

void clock::Show()
{
    cout << endl << "Initially" << endl ;
    cout << endl << hr << ":" << min << ":" << sec << endl ;
}

void wall_clock::Add(int a, int b, int c)
{
    hr+=a;
    min+=b;
    sec+=c;
}

void wall_clock::ShowTime()
{
    if(sec>60)
    {
        min += sec/60;
        sec = sec%60;
    }
    if(min>60)
    {
        hr += min/60 ;
        min = min%60;
    }
    cout << endl << hr << ":" << min << ":" << sec << endl ;
}

int main()
{
    wall_clock WC1,WC2;
    WC1 = 0 ;
    WC2 = 0 ;
    WC1.Show();
    WC2.Show();
    WC1.Add(1,17,65);
    WC2.Add(4,45,49);
    WC1.ShowTime();
    WC2.ShowTime();
    return 0;
}

C++ code showing Hierarchical Inheritance

This is the solution for T.U. 2066 Q.N. 3

#include <iostream>

using namespace std;

class Student
{
protected:
    float avg;
public:
    void Show();
};

class ComputerScience:public Student
{
    float OOPL, OS, NM ;
public:
    void GetMarks1();
    void ShowMarks1();
    void CalAvg1();
};

class Mathematics:public Student
{
    float Calculus, LA, Geometry ;
public:
    void GetMarks2();
    void ShowMarks2();
    void CalAvg2();
};

void Student::Show()
{
    cout << endl << "Average=" << avg << endl ;
}

void ComputerScience::GetMarks1()
{
    cout << endl << "Enter marks of:" << endl ;
    cout << endl << "OOPL:"  ;
    cin >> OOPL ;
    cout << endl << "NM:" ;
    cin >>  NM ;
    cout << endl << "OS:" ;
    cin >> OS ;
}

void ComputerScience::ShowMarks1()
{
    cout << endl << "Computer Science:" << endl ;
    cout << endl << "OOPL=" << OOPL << endl << "NM=" << NM << endl << "OS=" << OS << endl ;
}

void ComputerScience::CalAvg1()
{
    avg = (OOPL + NM + OS)/3 ;
}

void Mathematics::GetMarks2()
{
    cout << endl << "Enter Marks of:" << endl ;
    cout << endl << "Calculus:" ;
    cin >> Calculus ;
    cout << endl << "LA:" ;
    cin >> LA ;
    cout << endl << "Geometry:" ;
    cin >> Geometry ;
}

void Mathematics::ShowMarks2()
{
    cout << endl << "Mathematics:" << endl ;
    cout << endl << "Calculus=" << Calculus << endl << "LA=" << LA << endl << "Geometry=" << 
    Geometry << endl ;
}

void Mathematics::CalAvg2()
{
    avg = (Calculus + LA + Geometry)/3 ;
}

int main()
{
    ComputerScience CS;
    CS.GetMarks1();
    CS.CalAvg1();
    Mathematics M;
    M.GetMarks2();
    M.CalAvg2();
    CS.ShowMarks1();
    CS.Show();
    M.ShowMarks2();
    M.Show();
    return 0;
}

C++ code for Unary Operator Overloading(--) using Friend Function

This is the solution that increases an integer value by 1 by overloaded operator using Friend Function (T.U. 2072)

#include <iostream>

using namespace std;

class Decrement
{
    int a;
public:
    Decrement()
    {
        a=10;
    }
    Decrement(int x)
    {
        a=x;
    }
    friend operator++(Decrement &I,int); //Use & while using Friend Function
    friend operator++(Decrement &I);
    void print();
};

operator++(Decrement &I,int)
{
    I.a--;
}
operator++(Decrement &I)
{
    --I.a;
}

void Decrement::print()
{
    cout << endl << "a=" << a << endl ;
}

int main()
{
    Decrement D1;
    D1.print();
    D1--;
    D1.print();
    Decrement D2(100);
    D2.print();
    --D2;
    D2.print();
    return 0;
}

C++ code for Unary Operator Overloading (++)

This is the solution that increases an integer value by 1 by overloaded operator (T.U. 2073)

#include <iostream>

using namespace std;

class Increment
{
    int a;
public:
    Increment()
    {
        a=0;
    }
    Increment(int x)
    {
        a=x;
    }
    operator++(int)
    {
        a++;
    }
    operator++()
    {
        ++a;
    }
    void print();
};

void Increment::print()
{
    cout << endl << "a=" << a << endl ;
}

int main()
{
    Increment I1(4);
    I1.print();
    I1++;
    I1.print();
    Increment I2(100);
    I2.print();
    ++I2;
    I2.print();
    return 0;
}

C++ code to Convert Centigrade to Fahrenheit

This is the solution to convert Centigrade into Fahrenheit (T.U. 2066)

#include <iostream>

using namespace std;

class Temperature
{
    float centigrade, fahrenheit ;
public:
    Temperature()
    {
        centigrade=0.0;
    }
    void GetTemp();
    void Conversion();
    void print();
};

void Temperature::GetTemp()
{
    cout << endl << "Enter temperature in centigrade:" ;
    cin >> centigrade;
}

void Temperature::Conversion()
{
    fahrenheit = ((9*centigrade)/5) + 32 ;
}

void Temperature::print()
{
    cout << endl << "Temperature in Centigrade=" << centigrade <<
 endl << "Temperature in Fahrenheit=" << fahrenheit << endl ;
}

int main()
{
    Temperature t1;
    t1.GetTemp();
    t1.Conversion();
    t1.print();
    return 0;
}

C++ code for Word Count of entered Line of Text

This is the solution for counting the number of Words in given String in C++ (T.U. 2066)

#include <iostream>
#include<string.h>

using namespace std;

class WordCount
{
    string s;
    int counts;
public:
    WordCount()
    {
        counts=1;
    }
    void GetString();
    void ReadCount();
    void print();
};

void WordCount::GetString()
{
    cout << endl << "Type your text:" ;
    getline(cin,s);
}

void WordCount::ReadCount()
{
    if(s[0]==' ')
    {
        counts=1;
    }
    for(int i=1; i<s.length(); i++)
    {
        if(s[i]==' ')
        {
            if(s[i+1]==' ')
            {
                counts = counts ;
            }
            else
            {
                counts++;
            }
        }
    }
}

void WordCount::print()
{
    cout << endl << "The string you entered is: " ;
    cout << s ;
    cout << endl << "Word Count=" << counts << endl ;
}

int main()
{
    WordCount wc;
    wc.GetString();
    wc.ReadCount();
    wc.print();
    return 0;
}

C++ code for finding the Cube of a Number using Inline Function

This is the solution for finding Cube of a given number using Inline Function in C++ (T.U. 2066)

#include <iostream>

using namespace std;

class cube
{
    int a, acube;
public:
    void geta();
    inline void cubea();
    void show();
};

void cube::geta()
{
    cout << endl << "Enter a number:" ;
    cin >> a ;
}

void cube::cubea()
{
    acube = a*a*a ;
}

void cube::show()
{
    cout << endl << "Entered number(a)=" << a << endl << "Cube of a=" << acube << endl ;
}


int main()
{
    cube c1;
    c1.geta();
    c1.cubea();
    c1.show();
    return 0;
}

C++ code to Convert Feet into Meter

This is the solution to convert Feet into Meter (T.U. 2067)

#include <iostream>

using namespace std;

class Feet2Meter
{
    float feet, meter ;
public:

    void GetFeet();
    void Conversion();
    void print();
};


void Feet2Meter::GetFeet()
{
    cout << endl << "Enter distance in feet:" ;
    cin >> feet ;
}

void Feet2Meter::Conversion()
{
    meter = 0.3048*feet ;
}

void Feet2Meter::print()
{
    cout << endl << "Distance in feet=" << feet << endl << "Distance in meter=" << meter ;
}

int main()
{
    Feet2Meter f;
    f.GetFeet();
    f.Conversion();
    f.print();
    return 0;
}

C++ code to Convert Inch into Centimeter

This is the solution to convert Inch into Centimeter in C++ (T.U. 2068)

#include <iostream>

using namespace std;

class InchtoCentimeter
{
    float Inch, Centimeter ;
public:

    void GetInch();
    void Conversion();
    void print();
};


void InchtoCentimeter::GetInch()
{
    cout << endl << "Enter inch:" ;
    cin >> Inch ;
}

void InchtoCentimeter::Conversion()
{
    Centimeter = 2.54*Inch ;
}

void InchtoCentimeter::print()
{
    cout << endl << "Inch=" << Inch << endl << "Centimeter=" << Centimeter << endl ;
}

int main()
{
    InchtoCentimeter d;
    d.GetInch();
    d.Conversion();
    d.print();
    return 0;
}

C++ code for finding the Square of a Number using Inline Function

This is the solution for finding Square of a number using Inline Function (T.U. 2067, 2068)

#include <iostream>

using namespace std;

class square
{
    int a, asqr ;
public:
    void geta();
    inline void squarea();
    void print();
};

void square::geta()
{
    cout << endl << "Enter a:" ;
    cin >> a ;
}

void square::squarea()
{
    asqr = a*a ;
}

void square::print()
{
    cout << endl << "Entered number(a)=" << a << endl << "Square of a=" << asqr << endl ;
}

int main()
{
    square s1;
    s1.geta();
    s1.squarea();
    s1.print();
    return 0;
}

C++ code for subtracting Complex Numbers by Operator Overloading

This is the C++ code for subtracting two Complex Numbers by Overloading Binary(-) Operator (T.U. 2066)

#include <iostream>

using namespace std;

class Complex
{
    float real, img ;
public:
    Complex()
    {
        real=0;
        img=0;
    }
    Complex(int x, int y)
    {
        real = x;
        img = y;
    }
    Complex operator-(Complex);
    void print();
};

void Complex::print()
{
    cout << endl << real << "+i" << img << endl ;
}

Complex Complex::operator-(Complex c1)
{
    Complex c;
    c.real = real-c1.real ;
    c.img = img-c1.img ;
    return c;
}

int main()
{
    Complex c1(4,6), c2(6,4);
    Complex c3;
    c3 = c1-c2 ;
    cout << endl << "First complex number=" << endl ;
    c1.print();
    cout << endl << "Second complex number=" << endl ;
    c2.print();
    cout << endl << "Difference=" << endl ;
    c3.print();
    return 0;
}

C++ code for Unary Operator Overloading (--)

This is the solution that decreases an integer value by 1 by overloaded operator (T.U. 2071)

#include <iostream>

using namespace std;

class decrement
{
    int a;
public:
    decrement()
    {
        a=0;
    }
    decrement(int x)
    {
        a=x;
    }
    operator--(int)
    {
        a--;
    }
    operator--()
    {
        --a;
    }
    void print();
};

void decrement::print()
{
    cout << endl << "a=" << a << endl ;
}

int main()
{
    decrement d1(4);
    d1.print();
    d1--;
    d1.print();
    decrement d2(100);
    d2.print();
    --d2;
    d2.print();
    return 0;
}