Berikut ini saya akan sedikit berbagi bagai mana cara membuat program menghitung luas dan keliling lingkaran menggunakan C++
#include<iostream>
#include<constrea.h>
#include<string>
main()
{
cout<<"\t\t*********************************"<<endl;
cout<<"\t\t Nama\t\t: RAHDIKA YONI UTOMO"<<endl;
cout<<"\t\t NPM\t\t: 14.02.8677"<<endl;
cout<<"\t\t Jurusan\t: D3 MI 01"<<endl;
cout<<"\t\t*********************************"<<endl;
cout<<endl;
const
float fi = 3.14;
int jari_jari, hasil;
cout<<"\t\t###########################################"<<endl<<endl;
cout<<"\t\t# PERHITUNGAN LUAS DAN KELILING LINGKARAN
#"<<endl<<endl;
cout<<"\t\t###########################################"<<endl;
cout<<endl;
cout<<"\t\t----------------------------------------"<<endl;
cout<<"\t\tPilih Perhitungan :"<<endl;
cout<<"\t\t----------------------------------------"<<endl;
string luas="\t\t(1) luas";
cout<<luas<<endl;
string keliling="\t\t(2) keliling";
cout<<keliling<<endl;
cout<<"\t\t----------------------------------------"<<endl;
cout<<"\t\tMasukan jari_jari 1 = ";
cin>>jari_jari;
cout<<"\t\tMasukan jari_jari 2 = ";
cin>>jari_jari;
cout<<endl;
a:
int z;
cout<<"\t\tMasukan Nomer Pilih Perhitungan = ";
cin>>z;
if(z==1)
{
hasil = fi*jari_jari*jari_jari;
cout<<"\t\t----------------------------------------"<<endl;
cout<<"\t\tHasil
perhitungan luas lingkaran = "<<hasil<<endl;
cout<<"\t\t----------------------------------------"<<endl;
}
else if(z==2)
{
hasil = 2*fi*jari_jari;
cout<<"\t\t----------------------------------------"<<endl;
cout<<"\t\tHasil perhitungan keliling lingkaran =
"<<hasil<<endl;
cout<<"\t\t----------------------------------------"<<endl;
}
else
{
cout<<"\t\tNomer pilihan
perhitungan salah"<<endl<<endl;
goto
a;
}
getch(); }
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Hasilnya :
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