Symbol Referencing Errors

[ilikesuresh]

Hi
I have written the following program
But when i compile
i got
Undefined first referenced
symbol in file
wmove screen.o
initscr32 screen.o
endwin screen.o
printw screen.o
stdscr screen.o
wrefresh screen.o
ld: fatal: Symbol referencing errors. No output written to a.out


The program code is -->

#include<stdio.h>
#include<unistd.h>
#include<curses.h>
int main()
{
  initscr();
  move(5,15);
  printw("%s","Hello World\n");
  refresh();
  sleep(2);
  endwin();
  exit(0);
  }
 

Please any one tell me the way to solve this issue..
Thanks

[weaknessforcats]

You have failed to include a library or some source files in your build.

Where are these missing functions located?? For example, printw(). Where is the code for it?

[ilikesuresh]

You have failed to include a library or some source files in your build.

Where are these missing functions located?? For example, printw(). Where is the code for it?

But this printw is system defined function,Right?
If it is the case why we need to include the code ?

[weaknessforcats]

But this printw is system defined function,Right?
If it is the case why we need to include the code ?

You need to include the code or there is no function to call. In the case of system defined functions, all that means is that there is a library provided by the compiler manufacturer with the code for the system defined functions aleady compiled.

The documentation that comnes with your compiler should tell you which header ot include inyour code and the name of the library to add to trhe makefile for the linker.

You need to tell the linker that the code may be in a library by adding the library name as an additional dependency in your makefile.