A7 B.1

AIM :FIFOs: Full duplex communication between two independent processes. First process accepts sentences and writes on one pipe to be read by second process and second process counts number of characters, number of words and number of lines in accepted sentences, writes this output in a text file and writes the contents of the file on second pipe to be read by first process and displays on standard output.*

7(B.1)

#include<stdio.h>

#include<stdlib.h>

#include<errno.h>

#include<string.h>

#include<fcntl.h>

#include<sys/types.h>

#include<sys/stat.h>

#include<unistd.h>

#define FIFO_NAME1 "comm_pipe1"

#define FIFO_NAME2 "comm_pipe2"

int main()

{

char s[300],vowel[20],send[100];

int num,fd1,fd2,sig,k=0,i,wordcnt=1,charcnt=0,linecnt=0;

FILE *fp;

fp=fopen("fifo.text","w");

mknod(FIFO_NAME1,S_IFIFO | 0666,0);

mknod(FIFO_NAME2,S_IFIFO | 0666,0);

printf("waiting for poducers...\n");

fd1=open(FIFO_NAME1, O_RDONLY);

fd2=open(FIFO_NAME2, O_WRONLY);

printf("GOT A PRODUCER\n");

if((num=read(fd1,s,300))==-1)

perror("read");

else{

s[num]='\0';

printf("tick:read %d bytes :\%s\"\n",num,s);

k=0;

vowel[0]='\0';

wordcnt=1;

for(i=0;i<num;i++)

{

if((s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u'))

{

vowel[k]=s[i];

k++;

}

if(s[i]==' '&&s[i+1]!=' ')

{

wordcnt++;

}

if(s[i]==' '&&(s[i+1]==' '||s[i+1]=='\0'))

linecnt++;

else

if(s[i]!=' '&&s[i]!=' ')

charcnt++;

}

vowel[k]='\0';

sprintf(send,"for the given sentence the word count is %d\n vowel cnt is %d\n character count is %d\n linear are %d\n",wordcnt,k,charcnt,linecnt);

fprintf(fp,"%s",send);

//strcat(snd,vowel);

if((sig=write(fd2,send,strlen(send)))!=-1)

printf("\nwritten successfully to file 2");

else

printf("\nerror in writing to file 2");

}

return 0;

}

/******************************************OUTPUT****************************************

/*spllab01@spllab01-vostro:~$ gcc furious.c 

spllab01@spllab01-vostro:~$ ./a.out

waiting for poducers...

GOT A PRODUCER

tick:read 13 bytes : iam shruti.

"

written successfully to file 2spllab01@spllab01-vostro:~$ 

*/