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  1. #include <stdio.h> 
  2. #include <stdlib.h> 
  3. #include <string.h> 
  4. #include <sys/ipc.h> 
  5. #include <sys/msg.h> 
  6.  
  7. // Define the message structure 
  8. struct msg_buffer { 
  9.     long msg_type; 
  10.     char msg_text[100]; 
  11. }; 
  12.  
  13. int main() { 
  14.     key_t key; 
  15.     int msgid; 
  16.  
  17.     // Generate unique key 
  18.     key = ftok("progfile", 65); 
  19.  
  20.     // Create message queue and return id 
  21.     msgid = msgget(key, 0666 | IPC_CREAT); 
  22.  
  23.     struct msg_buffer message; 
  24.     message.msg_type = 1; 
  25.  
  26.     printf("Enter message: "); 
  27.     fgets(message.msg_text, sizeof(message.msg_text), stdin); 
  28.  
  29.     // Send message 
  30.     msgsnd(msgid, &message, sizeof(message.msg_text), 0); 
  31.  
  32.     printf("Message sent: %s\n", message.msg_text); 
  33.     return 0; 
  34. } 
  35.  
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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Enter message: Message sent:
https://ideone.com/53Addi
language:
C (gcc 8.3)
created:
21 hours ago
visibility:
public

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