#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "student.h"
#define LEN 1000
int student::init (const char *n,int v)
{
	value=v;
	if(n)
	{
		name = new char[strlen(n)+1];
		if(!name) return -1;
		strcpy(name,n);
		return 0;
	}
	name=0;
	return 0;
}

student::student(const char *n,int v)
{
	init(n,v);
}

student::student(const student &x)
{
	init (x.name,x.value);
}

student::~student()
{
	if(name)
	{
		delete[]name;
		name=0;
	}
	value=0;
}

student & student:: operator=(const student &x)
{
	this -> ~student();
	init(x.name,x.value);
	return *this;
}

int student :: operator < (const student & b)
{
    if (strcmp(name,b.name)<0) return 1;
    else
    {
        if (strcmp(name,b.name)==0)
        {
            if (value<b.value) return 1;
        }
     }
    return 0;
}

int student :: operator > (const student & b)
{
    if (strcmp(name,b.name)>0) return 1;
    else
    {
        if (strcmp(name,b.name)==0)
        {
            if (value>b.value) return 1;
        }
     }
    return 0;
}

int student :: operator == (const student & b)
{
    if (strcmp(name,b.name)==0 && value==b.value) return 1;
    return 0;
}

int student:: read(FILE *fp)
{
	char buf[LEN];
	this -> ~student();
	if(fscanf(fp,"%s%d",buf,&value)!=2)
	{
		if(feof(fp)) return -1;
		return -2;
	}
	return init (buf,value);
}

void student:: print(FILE *fp,int level)
{
	int j;
	for(j=0;j<level*2;j++) printf("  ");
	fprintf(fp,"%s-%d\n",name,value);
}

void student:: menu()
{
	char *p;
	char s[LEN];
	int k;
	print_menu_student();
	while(fgets(s,LEN,stdin))
	{

		k=strtol(s,&p,10);
		if(p==s) continue;
		switch(k)
		{
			case -1: return ;
			case 1:	{ print(stdout,0);break;}
			default: { printf("Error number\n");}
		}
		print_menu_student();
	}
	return;
}

void print_menu_student()
{
	printf("В классе STUDENT доступны следующие функции:\n");
	printf("-1-выйти\n");
	printf("1-печать\n");
}