#include <sys/time.h>
#include <stdio.h>
#include <pthread.h> 
#include <errno.h>

pthread_mutex_t x_mutex =PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t y_mutex =PTHREAD_MUTEX_INITIALIZER;
int counter=10;
main()
{
pthread_t threadA;
pthread_t threadB;

 
void*thread1();
void*thread2();
pthread_mutex_lock(&x_mutex);
pthread_mutex_lock(&y_mutex);
pthread_create(&threadA, NULL,thread1, NULL);
pthread_create(&threadB, NULL,thread2, NULL);
pthread_join(threadA, NULL);
pthread_join(threadB, NULL);
printf("COUNTER %d\n", counter);
}
 
void *thread1()
{
int tempA;

 tempA=counter+1;
pthread_mutex_unlock(&x_mutex);
pthread_mutex_lock(&y_mutex);
counter=tempA;


pthread_exit(NULL);
}
void *thread2()
{
int tempB;
pthread_mutex_lock(&x_mutex);
 tempB=counter+2;
counter=tempB;
 pthread_mutex_unlock(&y_mutex);

pthread_exit(NULL);
}