VERY SIMPLE QT PROGRAM adder

queue Array in C

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

#define max 5

void insert(int) ;
void display() ;
int del() ;
int queue[max] ;
int front = -1 ;
int rear = -1 ;

int main() {
    int option , num ;
 while(1)   
 {
  printf("\n 1 to insert , \n 2 to delete , \n 3 to display , \n 4 to exit ") ;
  scanf("%d" , &option) ;
  switch(option) {
     
      case 1:
             printf("\n Input a number\n ") ;
             scanf("%d" , &num) ;
             insert(num) ;
             break ;
            
      case 2:
             num = del() ;
             break ;
            
      case 3:
            display() ;
            break ;
           
      case 4: 
            exit(1) ;
           
      default: printf("\n fuck") ;
                   
    }
    
    
    
 }
   
   
   
   
   
    return 0 ;
}

void insert(int element) {
   
 if (rear == max-1 ) {
  printf("\n queue is full") ;
  return ; 
 }

 if(front == -1) {
  front = 0 ;  
    
 }
 rear = rear + 1 ;
 queue[rear] = element ;
   
   
}

int del() {
    int element ;
 if (front == -1 || front == rear + 1) {
  printf("\n queue is empty ") ;
  return ;
 }
 element = queue[front] ;
 front = front + 1 ;

 printf("%d is deleted " , element) ;
 return element ;

   
}
void display() {
   
  if (front == -1 || front == rear + 1) {
  printf("\n queue is empty ") ;
  return ;
 } 
 
  int i ;
 
  for(i=front ; i <=rear ; i++) {
   printf("\n %d , " , queue[i]) ;  
     
  }
   
}

GTK+ [because i have just drpped java swing ]

Wed 11 2016 13 Jan Saurav Gosaii

#include <gtk/gtk.h>

int main(int argc , char* argv[]) {

gtk_init(&argc , &argv) ;

GtkWidget* w ;

w = gtk_window_new(GTK_WINDOW_TOPLEVEL) ;

// using glib not GTK at next line

g_signal_connect(w , "delete-event" , G_CALLBACK(gtk_main_quit) , NULL) ;

gtk_widget_show(w) ;

gtk_main() ;

return 0 ;

}

------------------------------------------------------------------------------------------------------------------------------

#include <gtk/gtk.h>

int main(int argc , char* argv[]) {

gtk_init(&argc , &argv) ;

GtkWidget* w ;

GtkWidget* l ;

// create a root window

w= gtk_window_new(GTK_WINDOW_TOPLEVEL) ;

gtk_window_set_title(GTK_WINDOW(w) , "My First APP ") ;

gtk_window_set_default_size(GTK_WINDOW(w) , 500 , 500) ;

// now create a label

l = gtk_label_new("Happy GTK") ;

gtk_label_set_text(GTK_LABEL(l), "WELCOME TO GTK ") ;

//packing

gtk_container_add(GTK_CONTAINER(w) , l) ;

gtk_widget_show_all(w) ;

gtk_main() ;

return 0 ;

}

---------------------------------------------------------------------------------------------------------------------------------

#include <gtk/gtk.h>

int main(int argc , char* argv[]) {

gtk_init(&argc , &argv) ;

GtkWidget *w ;

GtkWidget *l ;

GtkWidget *lb ;

GtkWidget *box ;

w = gtk_window_new(GTK_WINDOW_TOPLEVEL) ;

gtk_window_set_title(GTK_WINDOW(w) , "Mano ya Na Mano") ;

gtk_window_set_default_size(GTK_WINDOW(w) , 500 , 500) ;

l = gtk_label_new("") ;

gtk_label_set_text(GTK_LABEL(l) , "Babul Supriya \n Nantu Ghatak") ;

lb = gtk_label_new("") ;

gtk_label_set_text(GTK_LABEL(lb) , "Fakiri kor bi re tui ") ;

//box

box = gtk_box_new(0 , 0) ;

gtk_box_pack_start(GTK_BOX(box) , l , 0, 0, 0 ) ;

gtk_box_pack_start(GTK_BOX(box) , lb , 0, 0, 0 ) ;

gtk_container_add(GTK_CONTAINER(w) , box) ;

gtk_widget_show_all(w) ;

gtk_main() ;

return 0 ;

}

----------------------------------------------------------------------------------------------------------------------------------

#include <gtk/gtk.h>

#include <stdio.h>

int main(int argc , char* argv[]) {

g_print("jjj") ;

printf("\n yah we can use both ") ;

gint x , y ;

x =23 ;

y = 67 ;

gint f = x +y ;

printf("\n result is %d " , f) ;

return 0 ;

}

Where is my Desktop Icons ? Gnome Files

To enable desktop icons on Gnome Desktop ,
just open terminal and type this command ,

 gsettings set org.gnome.desktop.background show-desktop-icons true

Compile GTK+ project

I have just dropped java swing and start using gtk+. I found pkg-config is not set autometically in Arch . pkg-config <enter> returns error message. pkg-config --libs or pkg-config --cflags returns unexpected results. After long tedious web search i found a right solution which works for me. Here is the syntax --
gcc -Wall -Wextra -std=c99 `pkg-config --cflags --libs gtk+-2.0` file.c -o appName <enter>

and my GTK+ code is compilled successfully.

Update ---
try to find dependencies --
pkg-config --libs --cflags gtk+-3.0
compile --  .c
gcc name.c  `pkg-config --libs --cflags gtk+-3.0'
compile --- .c++
g++ name.cpp `pkg-config --libs --cflags gtk+-3.0'

Uff !!!!!!
 

No Sound : pulseaudio Daemon startup failed [FIXED]

To install pulseaudio server and pavucontrol in Arch , type in terminal ,
pacman -S pulseaudio pavucontrol .
Now start pauseaudio --
pulseaudio --start
and if you are prompted "Daemon startup failed" then just execute the command
--
 sudo chown -R username:username /home/username

and try to reload pulseaudio server again.
:-) Enjoy