Part A-2

   


Please go to this link to view the program


https://docs.google.com/document/d/1WkpKdAsXef1ANVi0sPy329jd2oWSMFA2/edit?usp=sharing&ouid=115844831217705059666&rtpof=true&sd=true

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Part B-1

  #include <stdio.h> #include <string.h> #include <stdlib.h> #include <errno.h> #include <string.h> #include <sys/types.h> #include <sys/ipc.h> #include <sys/msg.h>   #define PERMS 0644 struct my_msgbuf {     long mtype;     char mtext[200]; };   int main(void) {     struct my_msgbuf buf;     int msqid;     int len;     key_t key;     system("touch msgq.txt");       if ((key = ftok("msgq.txt", 'B')) == -1) {        perror("ftok");        exit(1);   }       if ((msqid = msgget(key, PERMS | IPC_CREAT)) == -1) {        perror("msgget");        exit(1);     }     printf("me...
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