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

int get_line(int fd, char *line, int line_no, int max_length, int *line_length)
{
	lseek(fd, 0, SEEK_SET);
	int poz = 0;
	int l = 1;
	char c;
	while(read(fd,&c, 1) != 0)
	{
		if(c == '\n')
		{
			if(l == line_no)
			{
				*line_length = poz+1;
				return 0;
			}
			l++;
			poz = 0;
		}
		else{
			if(l == line_no && poz < max_length)
			 line[poz] = c;

			poz++;
		}
	}
	return -1;
}

typedef struct _OPERATION {
  int no1;
  int no2;
  char operator;
} OPERATION;

OPERATION a,b,c;

void write_operation(int fd, OPERATION *op)
{
	write(fd, op, sizeof(OPERATION));
}
void read_operation(int fd, OPERATION *op)
{
	read(fd, op, sizeof(OPERATION));
}

void perform_operations(int fd)
{
	OPERATION a;
	while(read(fd, &a, sizeof(OPERATION)))
	{
		printf("%d %c %d\n", a.no1, a.operator, a.no2 );
	}
}

int main()
{
	// int fd = open("read.txt",O_RDWR);
	// a.no1 = 5;
	// a.no2 = 5;
	// a.operator = '+';
	// write_operation(fd, &a);
	// lseek(fd, 0, SEEK_SET);
	// read_operation(fd, &b);
	// printf("%d%d\n", b.no1, b.no2 );
	int fd = open("operatii.bin", O_RDWR);
	perform_operations(fd);
	return 0;#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <string.h>

int get_line(int fd, char *line, int line_no, int max_length, int *line_length)
{
	lseek(fd, 0, SEEK_SET);
	int poz = 0;
	int l = 1;
	char c;
	while(read(fd,&c, 1) != 0)
	{
		if(c == '\n')
		{
			if(l == line_no)
			{
				*line_length = poz+1;
				return 0;
			}
			l++;
			poz = 0;
		}
		else{
			if(l == line_no && poz < max_length)
			 line[poz] = c;

			poz++;
		}
	}
	return -1;
}

typedef struct _OPERATION {
  int no1;
  int no2;
  char operator;
} OPERATION;

OPERATION a,b,c;

void write_operation(int fd, OPERATION *op)
{
	write(fd, op, sizeof(OPERATION));
}
void read_operation(int fd, OPERATION *op)
{
	read(fd, op, sizeof(OPERATION));
}

void perform_operations(int fd)
{
	OPERATION a;
	while(read(fd, &a, sizeof(OPERATION)))
	{
		printf("%d %c %d\n", a.no1, a.operator, a.no2 );
	}
}

int main()
{
	// int fd = open("read.txt",O_RDWR);
	// a.no1 = 5;
	// a.no2 = 5;
	// a.operator = '+';
	// write_operation(fd, &a);
	// lseek(fd, 0, SEEK_SET);
	// read_operation(fd, &b);
	// printf("%d%d\n", b.no1, b.no2 );
	int fd = open("operatii.bin", O_RDWR);
	perform_operations(fd);
	return 0;
}
}