Scanf reads data entered while waiting for recv

Question

While the server or client is waiting on recv() the user can input (any) N amount of data that will later be scanned by scanf which will cause the other socket to prompt the user for "Message: " N amount of times.

Scanf basically reads data entered when thread was waiting for recv().

Server Socket

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>

void *send_pscanf(char *);
void clear_buffer ();

int main() {

    // Create Socket
    int server_socket;
    server_socket = socket(AF_INET, SOCK_STREAM, 0);

    // Check what server_socket is before bind
    //printf("server_socket before bind: %d\n", server_socket);

    // Define the server address
    struct sockaddr_in server_address;
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(9009);
    server_address.sin_addr.s_addr = INADDR_ANY;

    // Bind the socket to our specified IP and port
    bind(server_socket, (struct sockaddr*) &server_address, sizeof(server_address));

    // Check what server_socket is after bind
    //printf("Server_socket after bind: %d\n", server_socket);

    // Listen for connections
    listen(server_socket, 5);

    // Accept connection
    int client_socket;
    client_socket = accept(server_socket, NULL, NULL);
    
    int count = 0;
    char client_response[50];
    while (count != 3) {

        // Send data
        memset(client_response, 0, 50);
        send_pscanf(client_response);
        send(client_socket, client_response, sizeof(client_response), 0);

        // Recv data from client
        recv(client_socket, &client_response, sizeof(client_response), 0);

        // Print the data recieved from the client
        printf("The client sent: %s\n", client_response);
        count += 1;
    }

    // Print the data recieved from the client
    printf("The client sent: %s\n", client_response);
    // Close the socket
    close(server_socket);

    return 0;
}

void *send_pscanf(char *client_response) {
    printf("Message: ");
    scanf("\n %[^\n]s", client_response);
}

Client Socket

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>

void *send_pscanf(char *);
void clear_buffer ();

int main() {

    // Create Socket
    int network_socket;
    network_socket = socket(AF_INET, SOCK_STREAM, 0);
    //printf("network_socket: %d\n", network_socket);

    // Specify an address for the socket
    struct sockaddr_in server_address;
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(9009);
    server_address.sin_addr.s_addr = INADDR_ANY;

    // Connect to the socket
    int connect_status = connect(network_socket, (struct sockaddr *) &server_address, sizeof(server_address));
    if (connect_status == -1) {
        printf("There was an error connecting to the socket\n");
    }

    // While loop for chat
    char server_response[50];
    char server_message[50];
    int count = 0;
    while(1) {

        memset(server_message, 0, 50);
        // Recieve data from the server;
        recv(network_socket, &server_response, sizeof(server_response), 0);

        // Print the data recieved from the server
        printf("The server sent the data: %s\n", server_response);

        // Send data to the server
        send_pscanf(server_message);
        send(network_socket, server_message, sizeof(server_message), 0);
        count += 1;
    }

    // Close the socket
    close(network_socket);
    return 0;
}

void *send_pscanf(char *server_message) {
    printf("Message: ");
    scanf("\n %[^\n]s", server_message);
}

I would like the user input to be ignored/blocked while waiting on recv() so the input is not read by scanf and so both server and client one have one message prompt one by one.