#include <stdio.h>
#include <pthread.h>
void start(void);
int x = 0;
int main(void)
{
pthread_t threadID;
printf("%d\n", x);
pthread_create(&threadID, NULL, (void *)start, NULL);
sleep(3); /* sleep for eternity to allow for thread completion */
printf("%d\n", x);
return 0;
}
void start(void)
{
x = 10;
}
=========================
the output:
/tmp/ccQumZET.o(.text+0x44): In function `main':
: undefined reference to `pthread_create'
collect2: ld returned 1 exit status
what happen?
