/* * The idea of Multithreading * */
#include <process.h>
/* needed for _beginthread(...), also change compliation to multithreaded code generation */
#include <windows.h>
/* needed for Sleep(.) */
#include <stdlib.h>
#include <stdio.h>

int addem(int);

long int global;

int main(int argc, char *argv[])
{
    global =0;

    _beginthread((void (*)(void *))addem, 0, (void *)100000);
    _beginthread((void (*)(void *))addem, 0, (void *)100000);
    _beginthread((void (*)(void *))addem, 0, (void *)100000);
    _beginthread((void (*)(void *))addem, 0, (void *)100000);

    Sleep( 5000L );
    printf("The global sum is %d\n", global);
    fflush(stdout);

    Sleep( 1000L );
    printf("The global sum is %d\n", global);
    fflush(stdout);
    return 0;
}

int addem(int count) {
    int i;
    for (i=0; i<=count; ++i) {
        printf("i= %d\n", i);
        fflush(stdout);
        global+=i;
    }
    return 0;
}