Percabangan

#include <iostream>
#include <conio.h>
using namespace std;
main(){
char nama[20];
char nik[20];
char jwb;
int a,b,c,d,lembur,q;
cout<<"\t\t================Program Hitung Gaji================>"<<endl;
cout<<"\nPilih Golongan :\n";
cout<<"Golongon 1 = 3000\n";
cout<<"Golongon 2 = 3500\n";
cout<<"Golongon 3 = 4000\n";
cout<<"Golongon 4 = 5000\n";
cout<<"Masukan Golongan :";cin>>a;
cout<<"Masukan Jam kerja :";cin>>b;

if(a==1){
c=3000;
if(b<=40){
lembur=0;
d=c*b;
}else{
lembur=(b-40)*(c*1.5);
d=c*40;
}
}
if(a==2){
c=3500;
if(b<=40){
lembur=0;
d=c*b;
}else{
lembur=(b-40)*(c*1.5);
}
}
if(a==3){
c=4000;
if(b<=40){
lembur=0;
d=c*b;
}else{
lembur=(b-40)*(c*1.5);
}
}
if(a==4){
c=5000;
if(b<=40){
lembur=0;
d=c*b;
}else{
lembur=(b-40)*(c*1.5);
}
}
else{
cout<<"Maaf tidak ada golongan\n";
}
cout<<"Gaji Anda : "<<c<<endl;
cout<<"Lembur : "<<lembur<<endl;
q=c+lembur;
cout<<"Total Gaji : "<<q<<endl;

return 0;}