Untitled

if(sizeA % 2==0 && sizeB % 2 == 0 && (sizeA + sizeB)%4 == 0)
    {
        thread_A=(pthread_t *)malloc(sizeA* sizeof(pthread_t ));
        for(int i=0;i<sizeA;i++)
        {
            pthread_create(&thread_A[i],NULL,rideShare,&A);
        }

        thread_B=(pthread_t *)malloc(sizeB* sizeof(pthread_t ));
        for( int i=0;i<sizeB;i++)
        {
            pthread_create(&thread_B[i],NULL,rideShare,&B);
        }
        for(int i=0;i<sizeA;i++)
        {
            pthread_join(thread_A[i],NULL);
        }
        for(int i=0;i<sizeB;i++)
        {
            pthread_join(thread_B[i],NULL);
        }
    }