feat: update structure

cs2106/labs/lab2/part2/lab2p2d.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+
+int main() {
+    int fp_in = open("./file.txt", O_RDONLY);
+    int fp_out = open("./talk.out", O_CREAT | O_WRONLY);
+
+    if(fork() == 0) {
+        dup2(fp_in, STDIN_FILENO);
+        dup2(fp_out, STDOUT_FILENO);
+        execlp("./talk", "talk", (char *) 0);
+        close(fp_in);
+        close(fp_out);
+    }
+    else
+        wait(NULL);
+
+}
+
+
+