include stdio include stdlib include string void graf int int char sg

#include <stdio.h>
#include <stdlib.h>
#include <string.h>


void graf(int n)
	{
		int i;
		char sg[200];

	for(i=0;i<n;i++)
		{
			sg[i]='-';
			if(i==n-1)
				{
					sg[i]='\n';
					sg[i+1]='\0';
				} 
		}
	printf("%s",sg);
	}


struct coins
	{
		char metal[80]; 
		char country[100]; 
		double price;  
		int year;  
		int count; 
		double nominal; 
	};


struct coins input(void)
	{
		struct coins m;
		fflush(stdin);
		puts("Enter country:");
		gets(m.country);
		puts("Enter metal:");
		gets(m.metal);
		puts("Enter nominal:");
		scanf("%lf", &m.nominal);
		puts("Enter year:");
		scanf("%d", &m.year);
		puts("Enter count:");
		scanf("%d", &m.count);
		puts("Enter price:");
		scanf("%lf", &m.price);
		return m;
	}

void add(char *file)
	{
		FILE *f;
		struct coins m;;
		system("cls");
		if ((f=fopen(file,"ab"))==NULL)
			{
				puts("Error open file");
				system("PAUSE");
			}

		m=input();
		fwrite(&m,sizeof(m),1,f);
		fclose(f);

	}

void show(char *file)
	{
		FILE *f;
		struct coins m;
		int n=0;
		char ch;
		system("cls");
		if ((f=fopen(file,"rb"))== NULL)
			{
				puts("Error open file");
				system("PAUSE");
			}
		puts("¹ |    METAL   |    COUNTRY  | NOMINAL | YEAR  |   COUNT     |PRICE ");
		while(fread(&m,sizeof(m),1,f))
			{
				n++;
				graf(80);
				printf("%2d| %11s| %12s| %8.1lf| %6d| %12d| %7.1lf\n",n,m.metal, m.country,m.nominal,m.year,m.count,m.price); 
			}
		if(n==0)
			{
				system("cls");
				puts("No coins"); 
			}

		fclose(f);
		system("PAUSE");
	}

	void edit(char *file)
	{
		FILE *f;
		char yes;
		struct coins m;
		int n=0, year;
		system("cls");
		if ((f=fopen(file,"r+b"))== NULL)
			{
				puts("Error open file");
				system("PAUSE");
				return;
			}
		puts("Enter year:");
		fflush(stdin);
		scanf("%d", &year);
		puts("¹ |    METAL   |    COUNTRY  | NOMINAL | YEAR  |   COUNT     |PRICE ");
		while(fread(&m,sizeof(m),1,f))
			{ 
				if(year == m.year)
					{ 
						graf(80);
						n++;
						printf("%2d| %11s| %12s| %8.1lf| %6d| %12d| %7.1lf\n",n,m.metal, m.country,m.nominal,m.year,m.count,m.price); 
						puts("\nEdit?:'y' Not edit:'n'");
						do
							{
								yes=getchar(); 
							} 
						while(yes!='y' && yes!='n' && yes!='Y' && yes!='N');

						if(yes=='y' || yes=='Y')
							{
								m=input();
								fseek(f,-sizeof(m), SEEK_CUR);
								fwrite(&m,sizeof(m),1,f);
								fseek(f,0, SEEK_CUR);
								puts("EDITED");
							}
					} 
			}
		if(n==0)
			{
				system("cls");
				puts("No coins");
			}
		fclose(f);
		system("PAUSE");
	}


void del(char *file)
	{
		FILE *f, *buf;
		char yes;
		struct coins m;
		int year, st=0, n=0;
		char name[100];
		system("cls");
		if ((f=fopen(file,"rb"))== NULL)
			{
				puts("Error open file");
				system("PAUSE");
				exit(1);
			}
		if ((buf=fopen("buf.dat","wb"))== NULL)
			{
				puts("Error open file");
				system("PAUSE");
				exit(2);
			}
		puts("Enter year:");
		fflush(stdin);
		scanf("%d", &year);
		puts("¹ |    METAL   |    COUNTRY  | NOMINAL | YEAR  |   COUNT     |PRICE ");
		while(fread(&m,sizeof(m),1,f))
			{ 
				if(year == m.year)
					{ 
						graf(80);
						n++;
						printf("%2d| %11s| %12s| %8.1lf| %6d| %12d| %7.1lf\n",n,m.metal, m.country,m.nominal,m.year,m.count,m.price); 
						puts("Delete:'y' Not delete:'n'");
						do
							{
								yes=getchar(); 
							} 
						while(yes!='y' && yes!='n' && yes!='Y' && yes!='N'); 
						if(yes == 'y' || yes =='Y')
							{ 
								st=1;
								puts("DELETED");
							}
					}
				if(st==0)
					{ 
						fwrite(&m,sizeof(m),1,buf); 
					} 
			}
		if(n==0)
			{
				system("cls");
				puts("No coins");
			}
		fclose(f);
		fclose(buf);
		remove(file);
		rename("buf.dat",file);
		system("PAUSE");
	}