Communication between Client Qt4 and Server in C

[hormoz1989]

I have my client with Qt4 C++ and my server is in C. I am trying o send a text from server to client and client should print it out, but It does not work. Is there any way to make that happened?

Client:

void Client::readFortune()
{
    QDataStream in(tcpSocket);
    //in.setVersion(QDataStream::Qt_4_0);
	QTextStream out ( stdout) ;
    if (blockSize == 0) {
        if (tcpSocket->bytesAvailable() < (int)sizeof(quint16))
            return;
 
        in >> blockSize;
 
    }
 
    if (tcpSocket->bytesAvailable() < blockSize)
        return;
 
    QString nextFortune;
    in >> nextFortune;
 
	if (nextFortune == currentFortune) {
        QTimer::singleShot(0, this, SLOT(requestNewFortune()));
        return;
    }
 
    currentFortune = nextFortune;   
    // It should set it here
    statusLabel->setText( currentFortune );
    getFortuneButton->setEnabled(true);
}

void Client::readFortune()
{
    QDataStream in(tcpSocket);
    //in.setVersion(QDataStream::Qt_4_0);
	QTextStream out ( stdout) ;
    if (blockSize == 0) {
        if (tcpSocket->bytesAvailable() < (int)sizeof(quint16))
            return;

        in >> blockSize;
		
    }

    if (tcpSocket->bytesAvailable() < blockSize)
        return;

    QString nextFortune;
    in >> nextFortune;
    
	if (nextFortune == currentFortune) {
        QTimer::singleShot(0, this, SLOT(requestNewFortune()));
        return;
    }

    currentFortune = nextFortune;   
    // It should set it here
    statusLabel->setText( currentFortune );
    getFortuneButton->setEnabled(true);
}

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Server:

while(1) {  // main accept() loop
		sin_size = sizeof their_addr;
		new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size);
		if (new_fd == -1) {
			perror("accept");
			continue;
		}
 
		inet_ntop(their_addr.ss_family,
			get_in_addr((struct sockaddr *)&their_addr),
			s, sizeof s);
		printf("server: got connection from %s\n", s);
 
		if (!fork()) { // this is the child process
			close(sockfd); // child doesn't need the listener
			if (send(new_fd, "Hello, world!", 13, 0) == -1)
				perror("send");
			close(new_fd);
			exit(0);
		}
		close(new_fd);  // parent doesn't need this
	}

while(1) {  // main accept() loop
		sin_size = sizeof their_addr;
		new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size);
		if (new_fd == -1) {
			perror("accept");
			continue;
		}

		inet_ntop(their_addr.ss_family,
			get_in_addr((struct sockaddr *)&their_addr),
			s, sizeof s);
		printf("server: got connection from %s\n", s);

		if (!fork()) { // this is the child process
			close(sockfd); // child doesn't need the listener
			if (send(new_fd, "Hello, world!", 13, 0) == -1)
				perror("send");
			close(new_fd);
			exit(0);
		}
		close(new_fd);  // parent doesn't need this
	}

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