OS PRODUCER CONSUMER PROBLEM USING SEMAPHORES

#include<stdio.h>

#define BUFFER_SIZE 3

int buffer[BUFFER_SIZE],item;

int fillCount = 0; // items produced

int emptyCount = BUFFER_SIZE; // remaining space

producer() {

    while (1) {

        item = produceItem();

      if(item==0)

      return;

      if(emptyCount==0)

      {printf("\nbuffer full");

      break;

      }

        emptyCount--;

           buffer[emptyCount]=item;

      printf("\n %d put into the buffer..",item);

        fillCount++;

     

    }

}

consumer() {

    while (1) {

      if(fillCount==0)

      {printf("\nbuffer empty");

      break;

      }

        fillCount--;

      item=buffer[emptyCount];

            printf("\n %d removed from buffer..",item);

        emptyCount++;

        printf("\n %d consumed..",item);

     

    }

}

int produceItem()

{

int n;

printf("\n Enter the number for production (0 to stop)..\n");

scanf("%d",&n);

return n;

}

int main()

{

char i;

while(i!='y' && i!='Y')

{

producer();

consumer();

printf("\nDo you want to exit...(Y or N)....");

scanf("%c",&i);

}

return 1;

}