#include<conio.h>
#include<iomanip.h>
void lingkaran ();
void segitiga ();
void segi_empat ();
void segitiga_2();
void main()
{
int pil;
cout<<"==================================================\n";
cout<<"| Program untuk menghitung LUAS dan KELILING BANGUN DATAR |\n";
cout<<"==================================================\n";
cout<<" Pilihan :\n";
cout<<"\n";
cout<<" 1 Untuk Menghitung Luas LINGKARAN\n";
cout<<"\n";
cout<<" 2 1 Untuk Menghitung Luas SEGITIGA SAMA SISI\n";
cout<<"\n";
cout<<" 2 Untuk Menghitung Luas SEGITIGA SAMA KAKI\n";
cout<<"\n";
cout<<" 3 Untuk Menghitung Luas SEGI EMPAT\n";
cout<<"\n";
cout<<"Masukan Pilihan Anda : ";
cin>>pil;
cout<<"\n";
cout<<"\n";
if(pil==1){lingkaran();}
if(pil==21){segitiga();}
if(pil==22) {segitiga_2();}
if(pil==3){segi_empat();}
}
void lingkaran()
{
clrscr;
float jari ,keliling ,luas;
const float pi= 3.14;
cout<<"================================================\n";
cout<<"| Program untuk menghitung LUAS dan KELILING LINGKARAN |\n";
cout<<"================================================\n";
cout<<"\n";
cout<<" Masukan panjang jari_jari(r) : ";cin>>jari;
luas = pi * jari * jari;
keliling = 2 * pi * jari;
cout<<"\n";
cout<<"\n";
cout<<"===================================================\n";
cout<<" Luas lingkaran adalah : "<<luas <<"\n";
cout<<" Keliling lingkaran adalah : "<<keliling <<"\n";
cout<<"===================================================\n";
cout<<"\n";
cout<<"\n";
cout<<" Tekan ENTER untuk KELUAR";
getch ();
}
void segitiga()
{
clrscr;
float a, t, sisi, luas ,keliling;
cout<<"=====================================================\n";
cout<<"| Program untuk menghitung LUAS dan KELILING SEGITIGA SAMA SISI |\n";
cout<<"=====================================================\n";
cout<<"\n";
cout<<" Masukan panjang alas : ";cin>>a;
cout<<" Masukan panjang tinggi : ";cin>>t;
luas = (0.5 *a)*t;
keliling = a+a+a;
cout<<"\n ";
cout<<"\n ";
cout<<"\n ";
cout<<"\n";
cout<<"============================================================\n";
cout<<" Hasil perhitungan \n" ;
cout<<"\n";
cout<<" Keliling Segitiga adalah : "<<keliling <<"\n";
cout<<" Luas Segitiga adalah : "<<luas <<"\n";
cout<<"============================================================\n";
cout<<"\n";
cout<<"\n";
cout<<" Tekan ENTER untuk KELUAR";
getch ();
}
void segitiga_2()
{
clrscr;
float pk, a, t,luas ,keliling;
cout<<"=======================================================\n";
cout<<"| Program untuk menghitung LUAS dan KELILING SEGITIGA SAMA KAKI |\n";
cout<<"=======================================================\n";
cout<<"\n";
cout<<" Masukan panjang panjang kaki: ";cin>>pk;
cout<<" Masukan panjang tinggi : ";cin>>t;
cout<<" Masukan panjang alas : ";cin>>a;
luas = (0.5*a)*t;
keliling = (2*pk)+a;
cout<<"\n ";
cout<<"\n ";
cout<<"\n ";
cout<<"\n";
cout<<"========================================================\n";
cout<<" Hasil perhitungan \n" ;
cout<<"\n";
cout<<" Keliling Segitiga adalah : "<<keliling <<"\n";
cout<<" Luas Segitiga adalah : "<<luas <<"\n";
cout<<"=======================================================\n";
cout<<"\n";
cout<<"\n";
cout<<" Tekan ENTER untuk KELUAR";
getch ();
}
void segi_empat()
{
clrscr;
float pjg ,lbr ,luas ,keliling;
cout<<"======================================================\n";
cout<<"| Program untuk menghitung LUAS dan KELILING SEGI EMPAT |\n";
cout<<"======================================================\n";
cout<<"\n";
cout<<" Masukan panjang panjang : ";cin>>pjg;
cout<<" Masukan panjang lebar : ";cin>>lbr;
luas = pjg * lbr;
keliling = 2 * (pjg+lbr);
cout<<"\n ";
cout<<"\n ";
cout<<"\n ";
cout<<"\n";
cout<<"=====================================================\n";
cout<<" Hasil perhitungan \n" ;
cout<<"\n";
cout<<" Keliling Segi Empat adalah : "<<keliling <<"\n";
cout<<" Luas Segi Empat adalah : "<<luas <<"\n";
cout<<"======================================================\n";
cout<<"\n";
cout<<"\n";
cout<<" Tekan ENTER untuk KELUAR";
getch ();
}
Hasilnya :
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