From fd6449c05c9d823044544cbf2109e93e6e205174 Mon Sep 17 00:00:00 2001
From: Peace <syneffort@gmail.com>
Date: Fri, 25 Apr 2025 12:20:09 +0900
Subject: [PATCH] bit flag for structure

---
 practice/g_bitFlagForStruct.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 practice/g_bitFlagForStruct.c

diff --git a/practice/g_bitFlagForStruct.c b/practice/g_bitFlagForStruct.c
new file mode 100644
index 0000000..f272057
--- /dev/null
+++ b/practice/g_bitFlagForStruct.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+typedef struct
+{
+    unsigned int data : 10; // 10비트, 0~1023
+    unsigned int error_code : 6; // 6비트 플래그
+} DataPacket;
+
+int main()
+{
+    DataPacket packet;
+    packet.data = 108;
+    packet.error_code = 0;
+
+    printf("[Packet] data: %d, error_code: 0x%x\n", packet.data, packet.error_code);
+
+    // 에러 감지
+    // 0번째 비트 켜기
+    packet.error_code |= 1;
+    printf("[Packet] data: %d, error_code: 0x%x\n", packet.data, packet.error_code);
+    
+    // 3번째 비트 켜기
+    packet.error_code |= (1 << 3);
+    printf("[Packet] data: %d, error_code: 0x%x\n", packet.data, packet.error_code);
+
+    // 5번째 비트 켜기
+    packet.error_code |= (1 << 5);
+    printf("[Packet] data: %d, error_code: 0x%x\n", packet.data, packet.error_code);
+
+    return 0;
+}