#include "RW.h"
#include
int readcount = 0;
char *path = "sample.txt";
char data[MAX];
FILE *f;
void read()
{
int r=5000;
wait(sem);
readcount++;
if(readcount==1)
if(wsem)
{
wait(wsem);
}
signal(sem);
f = fopen(path,"r+");
if(f==NULL)
{
printf("Error in opening file\n");
return;
}
while(!feof(f))
{
fread(data,1,r,f);
printf("%s",data);
}
fclose(f);
wait(sem);
readcount--;
if(!readcount)
{
if(wsem)
signal(wsem);
}
signal(sem);
}
void write()
{
FILE *f;
char data[MAX];
int w;
if(wsem)
{
wait(wsem);
f = fopen(path,"a+");
if(f==NULL)
{
printf("Error in opening file\n");
return;
}
printf("Enter the data to be written ");
scanf("%s",data);
w = fwrite(data,1,strlen(data),f);
if(!w)
printf("Error in writing data\n");
else
printf("Data written Successfully\n");
fclose(f);
signal(wsem);
}
}
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