NP Assignment 2

#include<stdio.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<unistd.h>
#include<stdlib.h>
#define READ 0
#define WRITE 1
int main() {
    int fd1[2], fd2[2]; 
    pipe(fd1), pipe(fd2); //process creates 2 pipes
	pid_t ret = fork(); //process forks
    //Both processes display their ids
    if(ret > 0) {
        printf("This is the parent process with ID %d\n", getpid()); //parent process identifies itself
    }
    else {
        printf("This is the child process with ID %d\n", getpid()); //child process identifies itself
    }
    //Both processes send messages
    if(ret > 0) {
        close(fd2[WRITE]), close(fd1[READ]);
        int parentMessage;
        //parent reads message from command line and sends to child
        printf("This is the parent with ID %d, enter the message to send to the child: ", getpid());
        scanf("%d", &parentMessage); 
        write(fd1[WRITE], &parentMessage, sizeof(int)); //parent sent the message to child
        close(fd1[WRITE]); 
        int receivedMessage;
        int bytesRead = read(fd2[READ], &receivedMessage, sizeof(int));
        printf("This is the parent with ID %d, Read %d bytes: %d \n", getpid(), bytesRead, receivedMessage);
        close(fd2[READ]);
        wait(0);
        exit(0); //parent exits
    }
    else {
        close(fd1[WRITE]), close(fd2[READ]);
        //child reads it's process ID and received integer
        int receivedMessage;
        int bytesRead = read(fd1[READ], &receivedMessage, sizeof(int));
        printf("This is the child with ID %d, Read %d bytes: %d \n", getpid(), bytesRead, receivedMessage);
        close(fd1[READ]);
        //child reads message from command line and sends to parent
        int childMessage;
        printf("This is the child with ID %d, enter the message to send to the parent: ", getpid());
        scanf("%d", &childMessage);  
        write(fd2[WRITE], &childMessage, sizeof(childMessage)); //child sent the message to parent
        close(fd2[WRITE]);
        exit(0); //child process exits
    }
	return 0;
}