'SDL_main' : must return a value - c++

Question

I am trying to retreive content of websice in c++ usind SDL but it is giving me this error:
'SDL_main' : must return a value
my code is:
#include <iostream>
#include "SDL.h"
#include "SDL_net.h"
#include <cstring>
int main(int argc,char** argv)
{
SDL_Init(SDL_INIT_EVERYTHING);
SDLNet_Init();
IPaddress ip;
SDLNet_ResolveHost(&ip,"www.linux.org",80);
const char* http="GET / HTTP/1.1\nHost: www.linux.org\n\n";
TCPsocket client=SDLNet_TCP_Open(&ip);
SDLNet_TCP_Send(client,http,strlen(http)+1);
char text[10000];
while(SDLNet_TCP_Recv(client,text,10000))
std::cout << text;
SDLNet_TCP_Close(client);
SDLNet_Quit();
SDL_Quit();
}
When I put return 0; at the end, it built project but it finished immediately after that
(I am using vs2012)
UPDATE
cout<<"Some message";
doesn't print anything, is it possible that I have configured my imports wrong? are those additional dependencies right?
SDL.lib;SDL_net.lib;SDLmain.lib
I don't know what else could be wrong ...

Answer 1

It's because SDL defines a macro like this:
#define main SDL_main
So the function you've written is actually called SDL_main and like any other function that is not the actual main function, if it doesn't return void, you have to give it a return statement.

Answer 2

because your code doesn't loop forever it just returns 0 after first pass, you need to make a loop like:
while(1){
sdl_events event;
switch(event){
//handle events, drawings and so on
...
...
...
case SDL_QUIT:
exit (0);
break;
}
}
http://sdl.beuc.net/sdl.wiki/OpenGL_Full_Example
UPDATE
you may also have some problem connecting to host so you could check if connection succeed like this:
#define MAXLEN 1024
int result;
char msg[MAXLEN];
result = SDLNet_TCP_Recv(sock,msg,MAXLEN-1);
if(result <= 0) {
// TCP Connection is broken. (because of error or closure)
SDLNet_TCP_Close(sock);
exit(1);
}
else {
msg[result] = 0;
printf("Received: \"%s\"\n",msg);
}
UPDATE 2
change this:
while(SDLNet_TCP_Recv(client,text,10000))
std::cout << text;
to this:
while(SDLNet_TCP_Recv(client,text,9999))
std::cout << text;
UPDATE 3
try this, put your receive part in this if statement
if(SDLNet_SocketReady(client) == 1)
{
while(SDLNet_TCP_Recv(client,text,9999))
std::cout << text;
}
if this still doesn't work I suggest to use QT sockets or Boost asio, both async and more intuitive