update: userprog (tee, tsh, sleep, hex2bin)

2026-01-01 04:22:30 +00:00
parent cf722d75ff
commit 79f46aa971
22 changed files with 1196 additions and 47 deletions
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+// 사용법: echo "41 42 43" | hex2bin
+int main() {
+    int byte;
+    // 16진수(%x)로 정수를 읽어서
+    while (scanf("%x", &byte) == 1) {
+        // char(바이트) 형태로 stdout에 씀
+        unsigned char c = (unsigned char)byte;
+        fwrite(&c, 1, 1, stdout);
+    }
+    return 0;
+}