Multiple Ports using Sockets

I am looking to create a distributed server that can listen on multiple ports. I have code written that works with one port, but I am not sure how to specify the server to listen on 2 ports. I put my entire code down for the server because it is short. I have been playing with the code for quite some time, but I can't figure anything out. Any help is much appreciated.

Code:

---

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

void error(char *msg)
{
    perror(msg);
    exit(1);
}

int main(int argc, char *argv[])
{
    int sockfd, newsockfd, portno, clilen;
    char buffer[256];
    struct sockaddr_in serv_addr, cli_addr;
    int n;
    if (argc < 2) {
        fprintf(stderr,"ERROR, no port provided\n");
        exit(1);
    }
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0)
        error("ERROR opening socket");
    bzero((char *) &serv_addr, sizeof(serv_addr));
    portno = atoi(argv[1]);
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_addr.s_addr = INADDR_ANY;
    serv_addr.sin_port = htons(portno);
    if (bind(sockfd, (struct sockaddr *) &serv_addr,
              sizeof(serv_addr)) < 0)
              error("ERROR on binding");
    listen(sockfd,5);
    clilen = sizeof(cli_addr);
    newsockfd = accept(sockfd,
                (struct sockaddr *) &cli_addr,
                &clilen);
    if (newsockfd < 0)
          error("ERROR on accept");
    bzero(buffer,256);
    n = read(newsockfd,buffer,255);
    if (n < 0) error("ERROR reading from socket");
    printf("Here is the message: %s\n",buffer);
    n = write(newsockfd,"I got your message",18);
    if (n < 0) error("ERROR writing to socket");
    return 0;
}

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Code:

---

int sockfd,
...
sockfd = socket(AF_INET, SOCK_STREAM, 0);

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Simple. Use an array of integers, and open a socket for each one, using a different port for each one. Listen on each one. Read from each one. Write to each one. Close each one.

Quzah.