this is the example of full duplex communication

Author: Prakhar824

pipe004.c

@@ -0,0 +1,42 @@
+#include<stdio.h>
+#include<unistd.h>
+
+int main() {
+   int pipefds1[2], pipefds2[2];
+   int rs1, rs2;
+   int pid;
+   char pipe1writemessage[20] = "Welcome";
+   char pipe2writemessage[20] = "Prakhar";
+   char readmessage[20];
+   rs1 = pipe(pipefds1);
+   
+   if (rs1 == -1) {
+      printf("Unable to create pipe 1 \n");
+      return 1;
+   }
+   rs2 = pipe(pipefds2);
+   
+   if (rs2 == -1) {
+      printf("Unable to create pipe 2 \n");
+      return 1;
+   }
+   pid = fork();
+   
+   if (pid != 0) // Parent process
+   {
+      close(pipefds1[0]); // Close the unwanted pipe1 read side
+      close(pipefds2[1]); // Close the unwanted pipe2 write side
+      printf("Parent: Write pipe 1 – %s\n", pipe1writemessage);
+      write(pipefds1[1], pipe1writemessage, sizeof(pipe1writemessage));
+      read(pipefds2[0], readmessage, sizeof(readmessage));
+      printf("Parent: Read pipe 2 – %s\n", readmessage);
+   } else { //child process
+      close(pipefds1[1]); // Close the unwanted pipe1 write side
+      close(pipefds2[0]); // Close the unwanted pipe2 read side
+      read(pipefds1[0], readmessage, sizeof(readmessage));
+      printf("Child: Read pipe 1 – %s\n", readmessage);
+      printf("Child: Write pipe 2 – %s\n", pipe2writemessage);
+      write(pipefds2[1], pipe2writemessage, sizeof(pipe2writemessage));
+   }
+   return 0;
+}