int open_file(char *);
int creat_masterarray(int );
int find_loc(char , char *, int);
int code_length(int );
int open_file(char *filename)
{
int fd;
fd = open(filename,O_RDONLY);
if(fd<0)
{
perror(“open”);
goto OUT;
}
printf(“File Opened Successfully. fd = %d\n”,fd);
return fd;

OUT:   exit(EXIT_FAILURE);
}

int creat_masterarray(int fd)
{
char ch,*master;
int count,flag=0,loc;

while(1)
{
count = read(fd,&ch,1);

if(count<0)
{
perror(“read”);
goto OUT;
}

if(ch == 10)
{
break;
}

if(flag==0)
{
master=(char *)malloc(1);
*master=ch;
flag++;
}
else
{
master=realloc(master,flag+1);
loc = find_loc(ch,master,flag);
if(loc)
{

*(master+flag)=ch;
flag++;
}
}

}

printf(“master array = %s”,master);
return flag;

OUT:
exit(EXIT_FAILURE);
}

int find_loc(char ch,char *ma,int size)
{
int i;
for(i=0;i<size;i++)
{
if( ch == *(ma+i))
return 0;
}

return i;
}
int code_length(int ndc)
{
if(ndc<=3)
return 2;
else if(ndc<=7)
return 3;
else if(ndc<=15)
return 4;
else if(ndc<=31)
return 5;
else if(ndc<=63)
return 6;
else if(ndc<=127)
return 7;
else
;
}

int main(int argc,char *argv[])
{
int fd,ndc,cl;

fd = open_file(argv[1]);
ndc = creat_masterarray(fd);
cl = code_length(ndc);

printf(“\nNDC  = %d”,ndc);
printf(“\ncode length  = %d”,cl);

return 0;
}

printf(“\nTotal even num are %d nd Their Average is %f    \n “, even, sumeven/even );
printf(“Total odd  num are %d nd Their Average is   %f \n “, odd, sumodd/odd);

return 0;
}

struct disfeet
{
int *f;

};

struct distance
{
struct disfeet *d;
};

int main()
{
struct distance *d1;

d1=(struct distance *)malloc(sizeof(struct distance));
d1->d=(struct disfeet *)malloc(sizeof(struct disfeet));
d1->d->f=(int *)malloc(sizeof(int));

printf(“enter distance\n”);
scanf(“%d”,&d1->d->f);

printf(“distance is %d feet.\n\n”,d1->d->f);

return 0;

}