Contoh Program Matematika C++ - a blog of a local hero wannabe

Program Matematika C++ yang terdiri dari Pembagian, Luas dan Keliling Lingkaran,, Luas dan Keliling Segitiga, volume Bola, Operasi Pangkat, Akar Kuadrat dan Persamaan kuadrat original by I Gusti Agung Ngurah Arjaya.

Enjoy :

#include <iostream.h>
#include <conio.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
void hitung();
void konversi();
void garis ();
long total (int x, int y);
int ribuan = 0;
int limaratusan = 0;
int ratusan = 0;
int limapuluhan = 0;
int puluhan = 0;
int limaan = 0;
int satuan = 0;
int desimal;
char romawi[30];
void main()
{
const float phi = 3.14;
float a,b,c,d,e,f,n,r,x;
char m;
cout<<”SELAMAT DATANG DI PROGRAM MATEMATIKA”<<endl<<endl;
cout<<”oleh :”<<endl;
cout<<”I Gusti Agung Ngurah Arjaya (080010139)”<<endl;
cout<<”I Gede Sumaprana Budi (080010124)”<<endl<<endl;
cout<<”Press any key to continue”;
getch() ;
clrscr();
do
{
clrscr();
cout<<”|======================================|”<<endl;
cout<<”| Nama : I Gusti Agung Ngurah Arjaya |”<<endl;
cout<<”| Nim   : 080010139                    |”<<endl;
cout<<”| Nama : I Gede Sumaprana Budi        |”<<endl;
cout<<”| Nim   : 080010124                    |”<<endl;
cout<<”| Kelas : P081                         |”<<endl;
cout<<”|======================================|”<<endl;
cout<<”|     PROGRAM FUNGSI MATEMATIKA        |”<<endl;
cout<<”|======================================|”<<endl;
cout<<”| Menu Pilihan                         |”<<endl;
cout<<”|======================================|”<<endl;
cout<<”| 1. Pembagian                         |”<<endl;
cout<<”| 2. Luas Lingkaran                    |”<<endl;
cout<<”| 3. Keliling Lingkaran                |”<<endl;
cout<<”| 4. Luas Segitiga                     |”<<endl;
cout<<”| 5. Keliling Segitiga                 |”<<endl;
cout<<”| 6. Volume Bola                       |”<<endl;
cout<<”| 7. Operasi Pangkat (x pangkat n)     |”<<endl;
cout<<”| 8. Operasi Akar (akar dari x)        |”<<endl;
cout<<”| 9. Persamaan Kuadrat a(x*x)+b(x)+c   |”<<endl;
cout<<”|======================================|”<<endl;
cout<<”|               BONUS                  |”<<endl;
cout<<”|======================================|”<<endl;
cout<<”| 10. PROGRAM KASIR                     |”<<endl;
cout<<”| 11. PROGRAM KONVERSI KE BIL. ROMAWI |”<<endl;
cout<<”|======================================|”<<endl;
cout<<endl;
cout<<”Masukkan Menu Pilihan : “;
cin>>d;
if(d==1)
{

clrscr();
cout<<”Masukan angka 1 : “;
cin>>a;
cout<<”Masukan angka 2 : “;
cin>>b;
c=a/b;
cout<<a<<” / “<<b<<” = “<<c<<endl;
cout<<endl;
}
else if(d==2)
{
clrscr();
cout<<”Masukan jari :”;
cin>>a;
c=phi*a*a;
cout<<”Luas Lingkaran = “<<phi<<” * “<<a<<” * “<<a<<” = “<<c<<endl;
cout<<endl;
}
else if(d==3)
{
clrscr();
cout<<”Masukan jari-jari : “;
cin>>a;
c=2*phi*a;
cout<<”Keliling Lingkaran = “<<2<<” * “<<phi<<” * “<<a<<” = “<<c<<endl;
cout<<endl;
}
else if(d==4)
{
clrscr();
cout<<”Masukan Alas : “;
cin>>a;
cout<<”Masukan Tinggi : “;
cin>>b;
c=0.5*a*b;
cout<<”Luas Segitiga = “<<0.5<<” * “<<a<<” * “<<b<<” = “<<c<<endl;
cout<<endl;
}
else if(d==5)
{
clrscr();
cout<<”Masukan Alas : “;
cin>>a;
cout<<”Masukan Tinggi : “;
cin>>b;
c=a*b;
cout<<”Keliling Segitiga = “<<a<<” * “<<b<<” = “<<c<<endl;
cout<<endl;
}
else if(d==6)
{
clrscr();
cout<<”Masukan jari-jari : “;
cin>>r;
c=1.33333*phi*r*r*r;
cout<<”Volume Bola = “<<”4/3″<<” * “<<phi<<” * “<<r<<” * “<<r<<” * “<<r<<” = “<<c<<endl;
cout<<endl;
}
else if(d==7)
{
clrscr();
cout<<”masukkan x : “;cin>>x;
cout<<”masukkan n : “;cin>>n;
a= pow(x,n);
cout<<endl;
cout<<x<<” pangkat “<<n<<” = “<<a<<endl;
}
else if(d==8)
{
clrscr();
cout<<”masukkan x : “;cin>>x;
a= sqrt(x);
cout<<endl;
cout<<” akar dari “<<x<<” = “<<a<<endl;
}
else if(d==11)
{
clrscr();
{
char lagi;
char kosong[30]=””;
do
{
clrscr();
strcpy(romawi,kosong);
hitung();
konversi();
cout<<”Bilangan Romawinya adalah : “<<romawi<<endl;
cout<<”ulangi ? : “; cin>>lagi;
lagi=toupper(lagi);
}     while((lagi==’Y’)||(lagi==’y’));
getch();
}
}
else if(d==9)
{
clrscr();
cout<<”masukkan nilai a : “;cin>>a;
cout<<”masukkan nilai b : “;cin>>b;
cout<<”masukkan nilai c : “;cin>>c;
d=sqrt(b*b-4*a*c);
if(d>=0)
{
e=(-b-d)/(2*a);
f=(-b+d)/(2*a);
cout<<”x1 : “<<e<<endl;
cout<<”x2 : “<<f<<endl<<endl;
}
else
cout<<”akar imajiner”<<endl;
}
else if(d==10)
{
clrscr();
cout<<”PROGRAM KASIR (MAKSIMAL 3)”<<endl<<endl;
char nama [25], harga [15], qty [10];
gotoxy (2,2);garis ();
gotoxy (2,3);cout<<”Nama Barang”;
gotoxy (25,3);cout<<”Harga”;
gotoxy (40,3);cout<<”QTY”;
gotoxy (50,3);cout<<”Bayar”;
gotoxy (2,4);garis ();
for (int i=1;i<=3;i++)
{
gotoxy(2,4+i);cin.getline(nama, sizeof(nama));
gotoxy(25,4+i);cin.getline(harga, sizeof(harga));
gotoxy(40,4+i);cin.getline(qty, sizeof(qty));
gotoxy(50,4+i);cout<<total(atoi(harga),atoi(qty));
cout<<endl<<endl;
}
}
else
{
cout<<”\nkode salah..!!”<<endl<<endl;
}
cout<<”\nIngin Masuk Menu Lagi(Y/T)?”;
cin>>m;
}
while ((m==’y’)||(m==’Y’));
getch();
}
void garis()
{
cout<<”==============================================================”<<endl;
}
long total(int x,int y)
{
return (x*y);
}
void hitung()
{
ulang :
cout<<”masukan bilangan desimal (1..3999) : “; cin>>desimal;
if (desimal>3999)
{
cout<<”diluar jangkauan”<<endl;
goto ulang;
}
else
proses:
if (desimal >= 1000)
{
ribuan = desimal / 1000;
desimal = desimal % 1000;
goto proses;
}
else if (desimal >=500)
{
limaratusan = desimal / 500;
desimal = desimal % 500;
goto proses;
}
else if (desimal >= 100)
{
ratusan = desimal / 100;
desimal = desimal % 100;
goto proses;
}
else if (desimal >= 50)
{
limapuluhan = desimal / 50;
desimal = desimal % 50;
goto proses;
}
else if (desimal >= 10 )
{
puluhan = desimal / 10;
desimal = desimal % 10;
goto proses;
}
else if (desimal >=5)
{
limaan = desimal / 5;
desimal = desimal % 5;
goto proses;
}
else
satuan = desimal;
}
void konversi()
{
for(int i=1; i<=ribuan;i++)
strcat(romawi,”M”);
if((limaratusan==1)&&(ratusan !=4))
strcat(romawi,”D”);
if((limaratusan==0)&&(ratusan==4))
strcat(romawi,”CD”);
else
if((limaratusan==1)&&(ratusan==4))
strcat(romawi,”CM”);
else
for(int i=1;i<=ratusan;i++)
strcat(romawi,”C”);
if((limapuluhan==1)&&(puluhan!=4))
strcat(romawi,”L”);
if((limapuluhan==0)&&(puluhan==4))
strcat(romawi,”XL”);
else
if((limapuluhan==1)&&(puluhan==4))
strcat(romawi,”XC”);
else
for(int i=1;i<=puluhan;i++)
strcat(romawi,”X”);
if((limaan==1)&&(satuan!=4))
strcat(romawi,”V”);
if((limaan==0)&&(satuan==4))
strcat(romawi,”IV”);
else
if((limaan==1)&&(satuan==4))
strcat(romawi,”IX”);
else
for(int i=1;i<=satuan;i++)
strcat(romawi,”I”);
}