1. Simpan code berikut dengan nama customer.h #include<string> #include<iostream> using namespace std; enum c_kind {general, wholesale, retail}; class customer{ public: void set_id(int id){ id_number=id; cout<< "id number : "<<(id)<<endl; } void set_name(const string& last, const string& first){ last_name= last; first_name= first; } c_kind

#include<stdio.h> void selectionsort(); void insertionsort(); int main(){ selectionsort(); insertionsort(); return 0; } void selectionsort() { int i,j,N,arr[20]; printf("masukkan jumlah element untuk selectionsort: ");   scanf("%d",&N);   printf("Masukan %d element: \n",N);   for(i=0;i<N;i++){       scanf("%d",&arr[i]);}