Program C++ (Class)

# include

class aritmatika

{

public:

double a, b, c;

void penjumlahan ()

{

cout << " Input nilai a! "; cin >> a;

cout << " Input nilai b! "; cin >> b;

c = a + b;

cout << " Hasil penjumlahan kedua bilangan tersebut adalah " << c << endl;

cout << endl;

}

void pengurangan ()

{

cout << " Input nilai a! "; cin >> a;

cout << " Input nilai b! "; cin >> b;

c = a - b;

cout << " Hasil pengurangan kedua bilangan tersebut adalah " << c << endl;

cout << endl;

}

void pembagian ()

{

cout << " Input nilai a! "; cin >> a;

cout << " Input nilai b! "; cin >> b;

c = a / b;

cout << " Hasil pembagian kedua bilangan tersebut adalah " << c << endl;

cout << endl;

}

void perkalian ()

{

cout << " Input nilai a! "; cin >> a;

cout << " Input nilai b! "; cin >> b;

c = a * b;

cout << " Hasil perkalian kedua bilangan tersebut adalah " << c << endl;

cout << endl;

}

};

int main ()

{

aritmatika my;

my.penjumlahan ();

my.pembagian ();

my.perkalian ();

my.pengurangan ();

return 0;

}

# include

# include

class aritmatika

{

public:

double a, b, c, d, e, f;

void judul ()

{

cout << " Program Aritmatika Sederhana \n";

cout << " ============================ \n";

cout << endl;

}

void input ()

{

cout << " Input nilai a! "; cin >> a;

cout << " Input nilai b! "; cin >> b;

}

void proses ()

{

c = a + b;

d = a - b;

e = a / b;

f = a * b;

}

void output ()

{

cout << " Hasil penjumlahan kedua bilangan tersebut adalah " << c << endl;

cout << " Hasil pengurangan kedua bilangan tersebut adalah " << d << endl;

cout << " Hasil pembagian kedua bilangan tersebut adalah " << e << endl;

cout << " Hasil perkalian kedua bilangan tersebut adalah " << f << endl;

cout << endl;

}

};

int main ()

{

char repeat;

repeat = 'y';

while ((repeat == 'y') || (repeat == 'Y'))

{

system ("cls");

aritmatika my;

my.judul ();

my.input ();

my.proses ();

my.output ();

cout << " Use this program again (y/t)?? "; cin >> repeat;

}

return 0;

}

# include

# include

class case_LnKBD

{

public:

int no_menu;

double p, l, a, t, r, s, luas, kel;

void judul ()

{

cout << " WELCOME TO PROGRAM CASE OF \n";

cout << "============================ \n";

cout << endl;

}

void menu ()

{

cout << "Menghitung Luas dan Keliling Bidang Datar \n";

cout << " 1. Bujur Sangkar \n";

cout << " 2. Persegi Panjang \n";

cout << " 3. Lingkaran \n";

cout << " 4. Segi Tiga \n";

cout << "Masukkan pilihan Anda!! (1/2/3/4) "; cin >> no_menu;

cout << endl;

}

void case_of ()

{

switch (no_menu)

{

case 1: cout << "Luas & Keliling Bujur Sangkar \n";

cout << "Sisi?? "; cin >> s;

luas = s * s;

cout << "Luas = " <<< " m kuadrat. \n";

kel = 4 * s;

cout << "Keliling = " <<< " m. \n";

break;

case 2: cout << "Luas & Keliling Persegi Panjang \n";

cout << "Panjang?? "; cin >> p;

cout << "Lebar?? "; cin >> l;

luas = p * l;

cout << "Luas = " <<< " m kuadrat. \n";

kel = ((2 * p) + (2 *l));

cout << "Keliling = " <<< " m. \n";

break;

case 3: cout << "Luas & Keliling Lingkaran \n";

cout << "Jari-jari?? "; cin >> r;

luas = 3.14 * r * r;

cout << "Luas = " <<< " m kuadrat. \n";

kel = 2 * 3.14 * r;

cout << "Keliling = " <<< " m. \n";

break;

case 4: cout << "Luas & Keliling Segi Tiga \n";

cout << "Alas?? "; cin >> a;

cout << "Tinggi?? "; cin >> t;

luas = 0.5 * a * t;

cout << "Luas = " <<< " m kuadrat. \n";

cout << " Sisi?? "; cin >> s;

kel = 3 * s;

cout << "Keliling = " <<< " m. \n";

break;

}

}

void penutup ()

{

cout << " Thank u.. \n";

cout << endl;

}

};

int main ()

{

char repeat;

repeat = 'y';

while ((repeat == 'y') || (repeat == 'Y'))

{

system ("cls");

case_LnKBD my;

my.judul ();

my.menu ();

my.case_of ();

my.penutup ();

cout << " Use this program again (y/t)?? "; cin >> repeat;

}

return 0;

}