Program If Else Do While Campur Campur C++

#Script Program

#include <iostream.h>
#include <conio.h>
#include <cstring.h>
void main(){
clrscr();
char mulai[25],ulang[25];
do{
int no;
cout<<"\n\n-Program If Berganda + Do While Bergabung-  ";
cout<<"\nGabungan program dari artikel sebelumnya";
cout<<"\n\npilih program yang akan dijalankan (angka)" ;
cout<<"\n1. Operator Aritmatika 2";
cout<<"\n2. Genap ganjil";
cout<<"\n3. Mencari Luas Lingkaran";
cout<<"\n\njalankan program no: ";
cin>>no;
if(no==1){
do{
float a,b;
cout << "\nProgram Aritmatika 2";
cout << "\nMasukkan Angka 1: ";
cin >>a;
cout <<"Masukkan Angka 2; ";
cin >>b;
cout <<"\n";
cout <<"Hasilnya \n";
cout <<"\n";
cout <<a <<" + " <<b <<" = "<<(a+b)<<"\n";
cout <<a <<" - " <<b <<" = "<<(a-b)<<"\n";
cout <<a <<" x " <<b <<" = "<<(a*b)<<"\n";
cout <<a <<" : " <<b <<" = "<<(a/b)<<"\n";
getch();
cout<<"\nUlangi Program ini? (y/n) ";
cin >>ulang;
}while((strcmp(ulang,"y")==0));
}else if(no==2){
do{
int a;
cout << "\nProgram Genap Ganjil";
cout << "\nMasukkan Angka: ";
cin >>a;
if(a%2==0){
cout<<" \nAnda memasukkan angka GENAP";
}else{
cout<<" \nAnda memasukkan angka GANJIL";
}
getch();
cout<<"\nUlangi Program ini? (y/n) ";
cin >>ulang;
}while((strcmp(ulang,"y")==0));
}else if(no == 3){
do{
float phi,r,luas;
phi=3.14;
cout<<"\n-Program Menghitung Luas Lingkaran-";
cout<<"\n\nMasukkan nilai jari jari(cm): ";
cin>>r;
luas=phi*r*r;
cout<<"\nLuas lingkaran adalah: " <<luas<<" cm";
getch();
cout<<"\nUlangi Program ini? (y/n) ";
cin >>ulang;
}while((strcmp(ulang,"y")==0));
}else{
cout<<"inputan anda tidak ada di dalam menu !";
}
cout <<"\nMulai Lagi? (y/n) ";
cin >>mulai;
}while((strcmp(mulai,"y")==0));
cout<<"\nSystem Exit";
}

#Output Program