Question

I write a program using memory segments but the problem is my wait() is throwing me an error

error:

ks.c:24:2: error: incompatible type for argument 1 of ‘wait’
/usr/include/x86_64-linux-gnu/sys/wait.h:116:16: note: expected ‘__WAIT_STATUS’ but argument is of type ‘int’
s.c:13:6: warning: unused variable ‘w’ [-Wunused-variable]

Code line is simple wait(1); and i have includeted all neccesarry ehaders for the project why do i get that error, since it should work like this…
imports

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/wait.h>
#include <errno.h>
#include "st.h"

Answer 1

If you check the documentation for wait, what it takes as parameter is a pointer to int where to set the status. Since this is homework, I’ll let you conclude the solution yourself.