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Displaying  Source Code(s)  
 


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A message queue program that shows a client server implementation this is the sender program using M

--------------------------------------------------------------------------------



/*
* A message queue program that shows a client server implementation
* this is the sender program using Message Queues
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#define MAX_TEXT 512

struct my_msg_st
{
long int my_msg_type;
char some_text[MAX_TEXT];
};

int main()
{
int running = 1;
int msgid;
char ender[3] = "end";
struct my_msg_st some_data;
char buffer[BUFSIZ];
system("clear");
msgid = msgget((key_t)1234, 0666 | IPC_CREAT);
if (msgid == -1)
{
fprintf(stderr,"msgget failed with error : %d
", errno);
exit(EXIT_FAILURE);
}

while(running)
{
printf("Enter some text : ");
fgets(buffer, BUFSIZ, stdin);
if (strncmp(buffer, ender,3) == 0 )
{ running = 0; }
printf("
Text sent : %s <BR>, buffer);
some_data.my_msg_type = 1;
strcpy(some_data.some_text, buffer);


if (msgsnd(msgid, (void *)&some_data, MAX_TEXT, 0) == -1)
{
// perror("msgsnd error");
fprintf(stderr,"msgsnd failed ");
exit(EXIT_FAILURE);
}

}
exit(EXIT_SUCCESS);
}
 

 

 

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