BinaryFilesExample

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

struct Icecream{
    char id[2];
    int kg;
    char name[20];
    float price;
};

void print_Icecream(struct Icecream ice){
    printf("\n%s", ice.id);
    printf("\n%s", ice.name);
    printf("\n%d", ice.kg);
    printf("\n%f\n", ice.price);
}

struct Icecream add_Icecream(){
    struct Icecream ice;
    FILE* file = fopen("icecream.bin", "wb");
    if(file == NULL){
        fprintf(stderr, "ERROR");
    }
    scanf("%s", ice.id);
    scanf("%s", ice.name);
    scanf("%d", &ice.kg);
    scanf("%f", &ice.price);
    fwrite(ice.id, sizeof(char)*2, 1, file);
    fwrite(ice.name, sizeof(char)*20, 1, file);
    fwrite(&ice.kg, sizeof(int), 1, file);
    fwrite(&ice.price, sizeof(float), 1, file);
    fclose(file);
    return ice;
};

struct Icecream read_Icecream(){
    struct Icecream ice;
    FILE* file = fopen("icecream.bin", "rb");
    if(file == NULL){
        fprintf(stderr, "ERROR");
    }
    fread(ice.id, sizeof(char)*2, 1, file);
    fread(ice.name, sizeof(char)*20, 1, file);
    fread(&ice.kg, sizeof(int), 1, file);
    fread(&ice.price, sizeof(float), 1, file);
    fclose(file);
    return ice;
};

int main()
{
    printf("Hello world!\n");
    FILE* file = fopen("icecream.bin", "wb");
    if(file == NULL){
        return 1;
    }
    fclose(file);
    struct Icecream ice = add_Icecream();
    struct Icecream ice_second = read_Icecream();
    print_Icecream(ice);
    print_Icecream(ice_second);
    return 0;
}