Hi Guys,

Just wondering why my console doesn't stay open when I run my program?

Here is the code for it:

Qt Code: 
  1. #include <QtCore/QCoreApplication>
  2. #include <winsock2.h>
  3. #include <stdio.h>
  4. #include <QDebug>
  5.  
  6. // #include <netinet/in.h>
  7. // #include <arpa.inet.h>
  8.  
  9. int main(int argc, char *argv[])
  10. {
  11.     QCoreApplication a(argc, argv);
  12.  
  13.     struct sockaddr_in peer; //"struct sockaddr_in" is a structure type and "peer" is a name of the variable. The "struct" word comes from C and it is not needed in C++
  14.     int s;
  15.     int rc;
  16.     char buf[1];
  17.  
  18.     peer.sin_family = AF_INET;
  19.     peer.sin_port = htons(7500);
  20.     qDebug() << peer.sin_port;
  21.     peer.sin_addr.s_addr = inet_addr("127.0.0.1");
  22.  
  23.     s = socket(AF_INET, SOCK_STREAM, 0);
  24.  
  25.     if(s < 0)
  26.     {
  27.         perror("socket call failed");
  28.         exit(0);
  29.     }
  30.  
  31.     rc = connect(s, (struct sockaddr *)&peer, sizeof(peer));
  32.  
  33.     if(rc)
  34.     {
  35.         perror("connect call failed");
  36.         exit(1);
  37.     }
  38.  
  39.     rc = send(s, "1", 1, 0);
  40.  
  41.     if(rc <= 0)
  42.     {
  43.         perror("send call failed");
  44.         exit(1);
  45.     }
  46.  
  47.     rc = recv(s, buf, 1, 0);
  48.     if(rc <= 0)
  49.         perror("recv call failed");
  50.     else
  51.         printf("%c\n", buf[0]);
  52.     exit(0);
  53.  
  54.     return a.exec();
  55. }
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