#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int res;
int NUM = 20;

char serverResponse[80], clientResponse1[80], clientResponse2[80];

void wait(){
res = open(clientResponse2, O_WRONLY);
strcpy(clientResponse1, "LOCK");
write(res, clientResponse1, strlen(clientResponse1)+1);
close(res);

// Gets response from the server about its FIFO name
res = open(clientResponse2, O_RDONLY);
read(res, serverResponse, 80);
close(res);
printf("Server Response: %s\n", serverResponse);
}

void signal(){
res = open(clientResponse2, O_WRONLY);
strcpy(clientResponse1, "UNLOCK");
write(res, clientResponse1, strlen(clientResponse1)+1);
close(res);

// Gets response from the server about its FIFO name
res = open(clientResponse2, O_RDONLY);
read(res, serverResponse, 80);
close(res);
printf("Server Response: %s\n", serverResponse);
}

void loop(){
for(int i=0;i<NUM;i++){
   printf("%s\n", "Processing in non-critical section");
   sleep(1);
}
printf("%s\n", "Waiting to get into critical section");
wait();

for(int i=0;i<NUM;i++){
   printf("%s\n", "Processing in critical section");
   sleep(1);
}
printf("%s\n", "Leaving the critical section");
signal();
}

int main()
{

// Specifying main FIFO name
char *mainfifo = "mainfifo";

// creating this
mkfifo(mainfifo, 0666);

// Operning FIFO to connect with server and prints server's message
res = open(mainfifo, O_RDONLY);
read(res, serverResponse, 80);
close

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