#include <stdio.h>
#include "headfork.h"// included in attachment
#include "headsem.h"
#include "headshr.h"

main()
{
        int id,i,sid1,sid2,nprc;
        char *str;
        int *cnt,s,*lock;

        cnt=(int *)shared(sizeof(int)*2,&sid1);
    lock=(int *)shared(sizeof(int)*2,&sid2);

    str=(char *)malloc(20);

        for(i=0;i<20;i++)
                str[i]='\0';
    lock_init(lock);

        printf("Enter any String :");
        scanf("%s",str);
    
    printf("Enter no. of proc:");
        scanf("%d",&nprc);

        id=p_fork(nprc);
        s=0;

        for(i=id;*(str+i)!='\0';i+=nprc)
        {
                if(*(str+i)>=65 && *(str+i)<=90 || *(str+i)>=97 && *(str+i)<=122)
                        s=s+1;
        }

    locksem(lock);
    *cnt=*cnt+s;
    unlock(lock);
    
        p_join(nprc,id);

    printf("No. of characters are : %d",*cnt);
}