Miscellany

#include <string.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <stdio.h>#include <stdlib.h>#include <errno.h>#include <netdb.h>#define DEST_PORT 5842#define DEST_IP "69.55.233.82"int main(void){        int sockfd;        struct sockaddr_in dest_addr;        sockfd = socket(PF_INET, SOCK_STREAM, 0); // do some error checking!        dest_addr.sin_family = AF_INET;          // host byte order        dest_addr.sin_port = htons(DEST_PORT);   // short, network byte order        dest_addr.sin_addr.s_addr = inet_addr(DEST_IP);        memset(dest_addr.sin_zero, '\0', sizeof dest_addr.sin_zero);        connect(sockfd, (struct sockaddr *)&dest_addr, sizeof dest_addr);        unsigned int num1 = 0;        recv(sockfd, (char *) &num1, 4, 0);        unsigned int num2 = 0;        recv(sockfd, (char *) &num2, 4, 0);        unsigned int num3 = 0;        recv(sockfd, (char *) &num3, 4, 0);        unsigned int num4 = 0;        recv(sockfd, (char *) &num4, 4, 0);        printf("Numbers:\nnum1:\t%d\nnum2:\t%d\nnum3:\t%d\nnum4:\t%d\n", num1, num2, num3, num4);        int res = num1 + num2 + num3 + num4;        char *msg;        sprintf(msg, "%d", res);        send(sockfd, msg, strlen(msg), 0);        char *stuff;        recv(sockfd, (char *) &stuff, 1024, 0);        printf("Readed: %s\n", stuff);        close(sockfd);        return 0;}