Operasi Pengulangan pada pemograman C++

1. # include <stdio.h>
# include <conio.h>
# include <iostream.h>
main()
{
char kd_susu,*jns_susu,*jns_ukuran,lagi;
int jml_beli,kd_ukuran;
double harga,bayar;
//input
mulai:
cout<<"Input Kode Susu [A..C] =";cin>>kd_susu;
cout<<"Input Kode Ukuran [1..3] =";cin>>kd_ukuran;

2. switch(kd_susu)
{
case 'a':case 'A':
jns_susu="Dancow";
if(kd_ukuran==1)
{
strcmp(jns_ukuran,"Besar");
harga=25000;
}
else
if(kd_ukuran==2)
{
jns_ukuran="Sedang";
harga=20000;
}
else
{
jns_ukuran="Kecil";
harga=15000;
}
break;
Jenis
Susu
Beasr Sedang Kecil
Dancow 25000 20000 15000
Bendera 20000 17500 13000
SGM 22000 18000 16000

3. default:
jns_susu="-";
jns_ukuran="-";
}
//output
cout<<"Maka Kode Susu="<<kd_susu<<endl;
cout<<"Maka Jenis Susu="<<jns_susu<<endl;
cout<<"Maka Kode Ukuran="<<kd_ukuran<<endl;
cout<<"Maka Jenis Ukuran="<<jns_ukuran<<endl;
cout<<"Maka Harga="<<harga<<endl;
cout<<"Input Jumlah Beli =";cin>>jml_beli;
bayar=jml_beli*harga;
cout<<"Maka Bayar="<<bayar<<endl;
cout<<"Input Data Lagi=";cin>>lagi;
if (lagi=='Y'||lagi=='y')
{clrscr;
goto mulai;}
else
cout<<"thanks"<<endl;
getch();
}

4. # include <stdio.h>
# include <conio.h>
# include <iostream.h>
main()
{
int a;
int w;
int g;
//untuk Increase
//for(a=1;a<=10;++a)
//untuk Decrease
//for(a=10;a>=1;a--)
//untuk Operator
for (a=1;a<=10;a+=3)
//untuk warna Text
/*for(w=1;w<17;++w )
gotoxy(w,w);textcolor(w);
cout<<endl;
cprintf("Maka warna ke =%d",w);
} */
//untuk warna background
/*for(g=0;g<20;g++)
{
textattr(g+((g+1)<<4));
cprintf("Maka background warna rn");
} */
//output decrease
cout<<a<<" ";
getch();
return 0;
}

5. # include <stdio.h>
# include <conio.h>
# include <iostream.h>
main()
{
int i,j;
for (i=1;i<=5;i++)
{
cout<<endl;
for(j=i;j<=5;j++)
cout<<i<<" ";
}
getch();
}

6. # include <stdio.h>
# include <conio.h>
# include <iostream.h>
main()
{
int bil=1;
do
{
cout<<bil<<" ";
bil+=2;
if (bil==5)
break;
//continue;
}
while (bil<=11);
getch();
}

7. # include <stdio.h>
# include <conio.h>
# include <iostream.h>
main()
{
int bil=1;
while (bil<=10)
{
cout<<bil<<" ";
bil++;
}
getch();
}