#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
char password[ ] = "password" ;
char str[ 30 ] ;
pthread_cond_t wake_up;
pthread_mutex_t mut;
void * enter_pass( )
{
while ( 1 )
{
pthread_cond_signal( & wake_up) ;
pthread_cond_wait( & wake_up, & mut) ;
}
}
void * check_pass( )
{
while ( 1 ) {
pthread_cond_wait( & wake_up, & mut) ;
}
else
printf ( "Wrong password, try another\n " ) ; pthread_cond_signal( & wake_up) ;
}
}
int main( void )
{
pthread_t thread1, thread2;
int rc;
rc = pthread_create( & thread1, NULL, enter_pass, NULL) ;
if ( rc) {
//exit(EXIT_FAILURE);
}
rc = pthread_create( & thread2, NULL, check_pass, NULL) ;
if ( rc) {
//exit(EXIT_FAILURE);
}
}
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compilation info
prog.c: In function 'main':
prog.c:52:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
/home/aCC9x6/ccqdfOzB.o: In function `main':
prog.c:(.text.startup+0x1f): undefined reference to `pthread_create'
prog.c:(.text.startup+0x38): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
stdout