struct db {
    char name[19];
    char date[10];
    char phone_number[13];
    char surname[19];
    } Zakaz;

struct db_data {
    char actual;
    struct data;
    char new_line;
};

char getmenu();
char find_menu();
void print_all(struct db Zakaz, FILE *f, int size_of_str);

void print_all(struct db Zakaz, FILE *f, int size_of_str){
    f=fopen("Zakaz.txt","r+");
    char ch;
    while(!feof(f)){
        //  fscanf(f, " %19s, %10s, 13s, %21s\n", Zakaz.name, Zakaz.date, Zakaz.phone_number, Zakaz.surname);
        ch=fgetc(f);
        fscanf(f, "%19s, ", Zakaz[i].name);
//====================================================================================================
// 1. Zakaz.name -> Zakaz[i].name
// 2. Zakaz[i].name -> &Zakaz[i].name
// 3. если не вариант, то попробуй заюзать fgets() (http://www.cplusplus.com/reference/cstdio/fgets/)
//====================================================================================================
        fscanf(f, "%10s, ", Zakaz.date);
        fscanf(f, "%13s, ", Zakaz.phone_number);
        fscanf(f, "%19s", Zakaz.surname);
        fscanf(f, "\n");
        if(ch!='^'){
            printf("%19s, ", Zakaz.name);
            printf("%10s, ", Zakaz.date);
            printf("%13s, ", Zakaz.phone_number);
            printf("%19s, ", Zakaz.surname);
            printf("\n");
        }
        else{
            fseek(f, size_of_str, SEEK_CUR);
        }
    }
    fclose(f);
}

#include <stdio.h>
#include <string.h>
#include "lab_6.h"

int main(int argc, char *argv[])
{
    struct Zakaz;
    FILE *f;

    system("color 6");
    if ((f=fopen("Zakaz.txt","r+"))==NULL){
        printf("Impossible to open the file. Creating a new file...\n\n");
    f=fopen("Zakaz.txt","w+");
    fclose(f);
    }
    int size_of_str=(9+(sizeof(Zakaz.name)/sizeof(char))+(sizeof(Zakaz.date)/sizeof(char))+(sizeof(Zakaz.name)/sizeof(char))+(sizeof(Zakaz.phone_number)/sizeof(char))+(sizeof(Zakaz.surname)/sizeof(char)));
    int del=0;
    while(1){
    switch(getmenu()){
    case '1':print_all(Zakaz, f, size_of_str); break;
    case '2':add_to_db(Zakaz, f); break;
    case '3':find_in_db(Zakaz, f, del, size_of_str); break;
    case '4':del_from_db(Zakaz, f); break;
    case '5':return 0;
    }

    printf("\nPress any key to return to the menu\n\n");
    getch();
    system("cls");
    }

    return 0;
}