<![CDATA[#include<stdio.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/shm.h>
struct country
{
char name[30];
char capital_city [30];
char currency[30];
int population;
};
int main(int argc,char*argv[])
{
int shm_id;
char*shm_addr;
int*countries_num;
struct country*countries;
struct shmid_ds shm_desc;
shm_id=shmget(100,2048,IPC_CREAT|IPC_EXCL\0600);
if(shm_id==-1)
{
Perror(“main:shmget:”);
exit(1);
}
shm_addr=shmat(shm_id,NULL,0);
if(!shm_addr)
{
perror(“main:shmat:”);
exit(1);
}
countries_num=(int*)shm_addr;
*countries_num=0;
countries=(struct country*)((void*)shm_addr sizeof(int));
strcpy(countries[0],name,”U.S.A”);
strcpy(countries[0],capital_city,”WASHINGTON”);
strcpy(countries[0],currency,”U.S.DOLLAR”);
countries[0].population=250000000;
( countries_num) ;
strcpy(countries[1].name,”israel”);
strcpy(countries[1].capital_city,”jerushalem”);
strcpy(countries[1].currency,”NEW ISRAEL SHEKED”);
countries[1].population=6000000;
(*countries_num) ;
strcpy(countries[2].name,”France”);
strcpy(countries[2].capital_city,”paris”); strcpy(countries[2].currency,”Frank”);
countries[2].population=60000000;
(*countries_num) ;
for(i=0;i<(*countries_num);i )
{
printf(“country%d:\n”,i 1); printf(“name:%d:\n”,i 1);
printf(“currency:%s:\n”,countries[i].currency);
printf(“population:%d:\n”,countries[i].population);
}
if(shmdt(shm_addr)==-1)
{
perror(“main:shmdt:”);
}
if(shmctl(shm_id,IPC_RMID,&SHM_DESC)==-1)
{
perror(“main:shmctl:”);
}
return 0;
}]]>
