From a337ed6dd191a51fc47e579e06d74ddf2681da1b Mon Sep 17 00:00:00 2001
From: foxliver <foxliver@naver.com>
Date: Thu, 25 Sep 2025 15:24:48 +0900
Subject: [PATCH] first commit

---
 Practice_05/ipcShared_producer.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/Practice_05/ipcShared_producer.c b/Practice_05/ipcShared_producer.c
index e69de29..00793d9 100644
--- a/Practice_05/ipcShared_producer.c
+++ b/Practice_05/ipcShared_producer.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+int main(){
+    const int shmSize = 4096;
+    const char* shmName = "FOX";
+    const char* message_0 = "Hello, ";
+    const char* message_1 = "Shared Memory!\n";
+
+    int shm_fd;     // Shared memory to file descripter
+    char* ptr;      // Shared memory to pointer
+
+    shm_fd = shm_open(shmName, O_CREAT | O_RDWR, 0666);
+    ftruncate(shm_fd, shmSize);
+
+    ptr = (char*) mmap(0, shmSize, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
+
+    sprintf(ptr, "%s", message_0);
+    ptr += strlen(message_0);
+    sprintf(ptr, "%s", message_1);
+    ptr += strlen(message_1);
+
+    return 0;
+}
\ No newline at end of file