Programming Forums - Setting up

Fairly new to programming. Any advice would be appreciated.
Thanks in advance

OK, I am using Microsoft Visual C++ for all of my C++ programming. We have done some very basic code just to get an overview of what is going on. I have found some code below, this code is pretty long compared to what we have done as we skimmed over the programs. But in MS Visual C++ how would I put this into the program.

THREADS:

#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
 
int myglobal;
 
void *thread_function(void *arg) {
int i,j;
for ( i=0; i<20; i++ ) {
j=myglobal;
j=j+1;
printf(".");
fflush(stdout);
sleep(1);
myglobal=j;
}
return NULL;
}
 
int main(void) {
 
pthread_t mythread;
int i;
 
if ( pthread_create( &mythread, NULL, thread_function, NULL) ) {
printf("error creating thread.");
abort();
}
 
for ( i=0; i<20; i++) {
myglobal=myglobal+1;
printf("o");
fflush(stdout);
sleep(1);
}
 
if ( pthread_join ( mythread, NULL ) ) {
printf("error joining thread.");
abort();
}
 
printf("\nmyglobal equals %d\n",myglobal);
 
exit(0);
}

OK what I am doing is when I open up the project I create the work space and give it a name. Now when I copy this code into the project and click compile, I get 1 error saying "Cannot open include file: 'pthread.h': No such file or directory". Now I know that in C++ you can have are .cpp file and a .h file. Now how can I prevent this from happening. I tried changing it up a little. I created a header file and pasted this part in it:

#include <iostream>
//#include <FK2008Sample2.h>
 
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <FK2008Sample>
int myglobal;
 
void *thread_function(void *arg) {
int i,j;
for ( i=0; i<20; i++ ) {
j=myglobal;
j=j+1;
printf(".");
fflush(stdout);
sleep(1);
myglobal=j;
}
return NULL;
}

and then I created a .cpp file and pasted this in it:
using namespace std;

int main(void) {
 
pthread_t mythread;
int i;
 
if ( pthread_create( &mythread, NULL, thread_function, NULL) ) {
printf("error creating thread.");
abort();
}
 
for ( i=0; i<20; i++) {
myglobal=myglobal+1;
printf("o");
fflush(stdout);
sleep(1);
}
 
if ( pthread_join ( mythread, NULL ) ) {
printf("error joining thread.");
abort();
}
 
printf("\nmyglobal equals %d\n",myglobal);
 
exit(0);
 
}

But I am still getting errors: I know I am making a silly mistake that will probably take a second to change.

Thanks in advance