MATERI UAP III (SERVER)

//LINK : https://www.dropbox.com/s/8z3yo9b72hd17i1/Screen%20Shot%202016-01-21%20at%2011.29.16%20AM.png?dl=0

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/ipc.h>

struct data{
    char nama_pelanggan[20];
    char gender[10];
    char majalah[100];
    int bulan;
    char alamat[100];
};

int main(){
    struct sembuf s;
    int h=shmget(123456,sizeof(struct data),IPC_CREAT|0666);
    int e=semget(123456,1,IPC_CREAT|0666);
    struct data *langananan=(struct data*)shmat(h,NULL,0666);
    int flag=0,i;
    printf("\n===================================\nPROGRAM PENDAFTARAN MAJALAH-SERVER\n===================================\n\n");
    do{
        printf("\n\nWaiting For Input\n\n");
        s.sem_num=0;
        s.sem_op=-1;
        s.sem_flg=0;
        semop(e,&s,1);
        if(strcasecmp(langananan->nama_pelanggan,"exit")!=0){
            printf("Nama Pelanggan \t\t\t: ");
            if(strcasecmp(langananan->gender,"Male")==0)
                printf("Mr. %s\n",langananan->nama_pelanggan);
            else if(strcasecmp(langananan->gender,"Female")==0)
                printf("Mrs. %s\n",langananan->nama_pelanggan);
            printf("Pilihan Majalah \t\t: %s\n",langananan->majalah);
            printf("Periode Langganan \t\t: %d bulan\n",langananan->bulan);
            printf("Alamat Pengirimana \t\t: %s\n",langananan->alamat);
            int harga;
            if(strcmp(langananan->majalah,"TIME")==0)
                harga=25000;
            else if(strcmp(langananan->majalah,"National Geographic")==0)
                harga=20000;
            else if(strcmp(langananan->majalah,"Femina")==0)
                harga=15000;
            printf("Harga Per Edisi \t\t: Rp. %d,00\n",harga);
            int sebelumDiskon=harga*langananan->bulan;
            printf("Harga Total \t\t\t: Rp. %d,00\n",sebelumDiskon);
            int diskon;
            if(langananan->bulan>18)
                diskon=30;
            else if(langananan->bulan>12)
                diskon=20;
            else if(langananan->bulan>6)
                diskon=10;
            printf("Diskon \t\t\t\t: %d%%\n",diskon);
            int total;
            total=sebelumDiskon-(sebelumDiskon*((float)diskon/100));
            printf("Total yang harus dibayar \t: Rp. %d,00\n",total);
            int pembayaran;
            do{
                printf("Masukan Pembayaran \t\t: Rp. ");
                scanf("%d",&pembayaran);getchar();
            }while(pembayaran<total);
            printf("Pengembalian \t\t\t: Rp. %d,00\n",pembayaran-total);
            printf("Kode Pembayaran \t\t: %c%c%d%c%c\n",langananan->majalah[0],
                langananan->majalah[1],langananan->bulan,langananan->nama_pelanggan[0],langananan->majalah[1]);
            printf("=====================\nORDER COMPLETED\n=====================\n\n");
        }
        else{
            printf("\nExiting Program\n");
        }
    }while(strcasecmp(langananan->nama_pelanggan,"exit")!=0);
    shmdt(&langananan);
    shmctl(h,IPC_RMID,0);
    semctl(e,0,IPC_RMID);
}