Hello again, Im working on a dogdatabase , i need to implement the following int

ID: 3682540 • Letter: H

Question

Hello again, Im working on a dogdatabase, i need to implement the following into my C Program, I will be using a Xcode to compile this.

I keep getting errors about the size of the fwrites in my program like the following, saying they execpt 4 arguements but there is only three:

fwrite(sizeof(struct dog_entry), 1, f);//save the data

My program so far:

//
//
// Exercise1
// Evan Horvath
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#define SZ_NAME 32
#define SZ_BREED 32
#define SZ_COLOR 16
#define SZ_SEX 8

struct dog_entry
{
    char name [SZ_NAME];
    char breed [SZ_BREED];
    char color [SZ_COLOR];
    float weight;
    int age;
    char sex [SZ_SEX];
};

#define REC_SIZE sizeof(struct dog_entry)

char pr_menu(void);
void addRecord(struct dog_entry *reg, int type);
void modifyRecord(int);
void delete_dog(int g, struct dog_entry *rec);
void view_dog(int, struct dog_entry *reg);
int find_dog(int, struct dog_entry *rec);
void searchRecord(int, struct dog_entry *rec);

int main()
{
    struct dog_entry reg;
    int i = 0, n;
    while(free)
    {
        char ch = pr_menu();

        switch(ch)
        {
            case '1':
                addRecord(&reg, 1);
                i++;
                break;

            case '2':
                addRecord(&reg, 2);
                break;

            case '3': delete_dog(1, &reg);
                break;

            case '4': view_dog(1, &reg);
                break;

            case '5': searchRecord(n, &reg);
                break;

            default: break;
        }

        if (ch == '6') // exit
            break;

    }
    // system("pause");
}
char pr_menu(void)
{
    char ch;
    // system("cls");
    printf(" Menu: 1.Add 2.Change 3.Delete 4.View 5.Search 6.Exit Enter Choice: ");
    scanf("%c", &ch);
    return ch;
}
//Function that adds a record
void addRecord(struct dog_entry *rec, int type)
{
    FILE * f;
    f = fopen("database_dog.txt", "w+");//definition of file

    // system("cls");

printf("Add the Dog: ");

    printf(" Enter Name: ");
    scanf("%s", rec->name);

    printf(" Enter Breed: ");
    scanf("%s", rec->breed);

    printf(" Enter Color: ");
    scanf("%s", rec->color);

    printf(" Enter Weight: ");
    scanf("%f", &rec->weight);

    printf(" Enter Age: ");
    scanf("%d", &rec->age);

    printf(" Enter Sex: ");
    scanf("%s", rec->sex);

    fseek(f, 0, SEEK_END);
    fwrite(sizeof(struct dog_entry), 1, f);//save the data
    fclose(f);//close the file
    printf(" ");
    // system("pause");
}
//Function that modifies the record
void modifyRecord(int index)
{

}
//Function that displays records
void view_dog(int total, struct dog_entry *rec)
{
    FILE * f;
    f = fopen("database_dog.txt", "r+");//definition of file
    char name [SZ_NAME];

    // system("cls");
    printf("View the Dog: ");
    printf(" Enter Dog's Name: ");
    scanf("%s", name);

    rewind(f);
    while(fread(sizeof(struct dog_entry), 1, f))
    {
        if(strcmp(name, rec->name) == 0)
        {
            printf(" Name: %s", rec->name);

            printf(" Breed: %s", rec->breed);

            printf(" Color: %s", rec->color);

            printf(" Weight: %f", rec->weight);

            printf(" Age: %d", rec->age);

            printf(" Sex: %s", rec->sex);

            printf(" ");
            // system("pause");
            break;
        }
    }

    fclose(f);//close the file

}
int find_dog(int g, struct dog_entry *rec){
    FILE * f;
    f = fopen("database_dog.txt", "r+");//definition of file
    char name [SZ_NAME];

    printf(" Enter Dog's Name: ");
    scanf("%s", name);

    rewind(f);
    int c;
    while((fread(sizeof(struct dog_entry)), 1, f))
    {
        if(strcmp(name, rec->name) == 0)
        {
            c++;
            break;
        }
    }

    fclose(f);//close the file
    return c;
}
void delete_dog(int g, struct dog_entry *rec){
    FILE * f;
    f = fopen("database_dog.txt", "r+");//definition of file
    char name [SZ_NAME];
    int num = 0;
    int c;
    // system("cls");
    printf("Delete Record: ");
    printf(" Enter Dog's number: ");
    scanf("%d", &num);

    fseek(f, num * sizeof(struct dog_entry), SEEK_SET);
    fread(sizeof(struct dog_entry), 1, f);
    fclose(f);//close the file
}
//Function that searches for the record
void searchRecord(int n, struct dog_entry *rec)
{
    int flag = 0;

    flag = find_dog(0, rec);

    if(flag == 1)
        printf("Record exists ");
    else
        printf("No such record exists ");
}

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SZ_NAME 32
#define SZ_BREED 32
#define SZ_COLOR 16
#define SZ_SEX 8

struct dog_entry
{
char name [SZ_NAME];
char breed [SZ_BREED];
char color [SZ_COLOR];
float weight;
int age;
char sex [SZ_SEX];
};

#define REC_SIZE sizeof(struct dog_entry)

struct dog_entry record[REC_SIZE];
char pr_menu(void);
void addRecord(struct dog_entry *reg, int type);
void modifyRecord(int);
void delete_dog(int g, struct dog_entry *rec);
void view_dog(int, struct dog_entry *reg);
int find_dog(int, struct dog_entry *rec);
void searchRecord(int, struct dog_entry *rec);

int main()
{
struct dog_entry reg;
int i = 0, n;
while(free)
{
char ch = pr_menu();

    switch(ch)
    {
        case '1':
            addRecord(&reg, 1);
            i++;
            break;

        case '2':
            addRecord(&reg, 2);
            break;

case '3': delete_dog(1, &reg);
break;

case '4': view_dog(1, &reg);
break;

case '5': searchRecord(n, &reg);
break;

default: break;
}

if (ch == '6') // exit
break;

}
// system("pause");
}
char pr_menu(void)
{
char ch;
// system("cls");
printf(" Menu: 1.Add 2.Change 3.Delete 4.View 5.Search 6.Exit Enter Choice: ");
scanf("%c", &ch);
return ch;
}
//Function that adds a record
void addRecord(struct dog_entry *rec, int type)
{
FILE * f;//define donde se guarda el archivo
f = fopen("database_dog.txt", "w+");//definition of file

// system("cls");
printf("Add the Dog: ");

printf(" Enter Name: ");
scanf("%s", rec->name);

printf(" Enter Breed: ");
scanf("%s", rec->breed);

printf(" Enter Color: ");
scanf("%s", rec->color);

printf(" Enter Weight: ");
scanf("%f", &rec->weight);

printf(" Enter Age: ");
scanf("%d", &rec->age);

printf(" Enter Sex: ");
scanf("%s", rec->sex);

fseek(f, 0, SEEK_END);
fwrite(&rec, sizeof(struct dog_entry), 1, f);//save the data
fclose(f);//close the file
printf(" ");
// system("pause");
}
//Function that modifies the record
void modifyRecord(int index)
{

}
//Function that displays records
void view_dog(int total, struct dog_entry *rec)
{
FILE * f;//define donde se guarda el archivo
f = fopen("database_dog.txt", "r+");//definition of file
char name [SZ_NAME];

// system("cls");
printf("View the Dog: ");
printf(" Enter Dog's Name: ");
scanf("%s", name);

rewind(f);
while(fread(rec, sizeof(struct dog_entry), 1, f))
{ //apertura del while
    if(strcmp(name, rec->name) == 0)//compara una cadena de caracteres
    {
        printf(" Name: %s", rec->name);

printf(" Breed: %s", rec->breed);

printf(" Color: %s", rec->color);

printf(" Weight: %f", rec->weight);

printf(" Age: %d", rec->age);

printf(" Sex: %s", rec->sex);

        printf(" ");
        // system("pause");
        break;
    }
}

fclose(f);//close the file

}
int find_dog(int g, struct dog_entry *rec){
FILE * f;//define donde se guarda el archivo
f = fopen("database_dog.txt", "r+");//definition of file
char name [SZ_NAME];

printf(" Enter Dog's Name: ");
scanf("%s", name);

rewind(f);
int c;
while(fread(rec, sizeof(struct dog_entry), 1, f))
{ //apertura del while
    if(strcmp(name, rec->name) == 0)//compara una cadena de caracteres
    {
        c++;
        break;
    }
}

fclose(f);//close the file
return c;
}
void delete_dog(int g, struct dog_entry *rec){
FILE * f;//define donde se guarda el archivo
f = fopen("database_dog.txt", "r+");//definition of file
char name [SZ_NAME];
int num = 0;

// system("cls");
printf("Delete Record: ");
printf(" Enter Dog's number: ");
scanf("%d", &num);

fseek(f, num * sizeof(struct dog_entry), SEEK_SET);
fread(&rec, sizeof(struct dog_entry), 1, f);
fclose(f);//close the file
}
//Function that searches for the record
void searchRecord(int n, struct dog_entry *rec)
{
char dog[SZ_NAME];
int j;
int flag = 0;

flag = find_dog(0, rec);

if(flag == 1)
    printf("Record exists ");
else
    printf("No such record exists ");
}

sample output

Menu:
1.Add
2.Change
3.Delete
4.View
5.Search
6.Exit

Enter Choice: 1
Add the Dog:
Enter Name: jonny

Enter Breed: combai

Enter Color: brown

Enter Weight: 15
Enter Age: 5

Enter Sex: female



Menu:
1.Add
2.Change
3.Delete
4.View
5.Search
6.Exit

Enter Choice: 4
View the Dog:
Enter Dog's Name: jonny

Menu:
1.Add
2.Change
3.Delete
4.View
5.Search
6.Exit

Enter Choice:
Menu:
1.Add
2.Change
3.Delete
4.View
5.Search
6.Exit

Enter Choice: 6

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