Can someone please fix my errors in code?

 

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

struct person {
    char name[30];
    char last_name[30];
    int age;
    float wage;
} person1;

struct person {
    char name[30];
    char last_name[30];
    int age;
    float wage;
} person2;

struct person {
    int age;
    float wieght;
    char name[30];
};

typedef struct people {
    char name[30];
    char last_name[30];
    int age;
    float wage;
}person2;

struct pers {
    int age;
    double wieght;
};

int main() {
    //first Example:

    printf("Example 1: \n");
    scrcpt(person1.name, "James Bond");
    person1.age = 55;
    person1.wage = 17.7;

    printf("The name of this person is %s. \n", person1.name);
    printf("The age of this person is %s. \n", person1.age);
    printf("The wage of this person is %s. \n", person1.wage);
    printf("\n \n");
    //---------------------------------------------------------------------------------------------------
    // 2nd Example:
    printf("Example 2: \n");
    person2 student1;
    strcpy(student1.name, "James Bond");
    person1.age = 55;
    person1.wage = 17.7;

    printf("The name of this person is %s. \n", person1.name);
    printf("The age of this person is %s. \n", person1.age);
    printf("The wage of this person is %s. \n", person1.wage);
    printf("\n \n");
    //---------------------------------------------------------------------------------------------------
    // 3rd Example:
    // In this example, we would like to get access for menbers using Pointer
     // 2nd Example:
    printf("Example 3: \n");
    struct pers* personPtr, person11;
    personPtr = &person11;

    printf("Please insert thae age of this person: \n");
    scanf("%d", &personPtr->age);

    printf("Please insert the wieght of this person: \n");
    scanf("%d", &personPtr->wieght);

    printf("The age of this person is %d. \n", personPtr->age);
    printf("The wieght of this person is %s. \n", personPtr->wieght);
    
    
    struct person* ptr;

    int n;
        
    printf("Please, enter the number of the persons that are going to be in this struct: ");
    scanf("&d", &n);

    ptr = (struct persons*)malloc(n * sizeof(struct person));

    for (int i = 0; i < n; i++) {

        printf("Please insert the name followed by age of the person, serperated with a space: ");
        scanf("%s %d", (ptr + i)->age);
    }

    printf("Let's dispaly the inserted names and thier ages: ");

    for (int i = 0; i < n; i++) {
        printf("Name: %s - Age: %d \n", (ptr + i)->name, (ptr + i)->age);
    }

    return 0;
}

What type of data to reconstruct a person's travels by law enforcement agencies sometimes use?

Hi. Can you please make this code work?

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

typedef struct {
    char name[50];
    char category;
    char manufacturer[50]; // Change company to manufacturer
    float purchased_price;
    float sale_price;
    int quantity;
    time_t purchased_date;
    time_t production_date;
    time_t expiry_date;
    int store_code;
    char currency[4];
    long barcode;
} Item;

typedef struct {
    time_t purchase_time;
    Item *items;
    int item_count;
} Receipt;

// Caesar cipher encryption
void encrypt_caesar_cipher(char *input, int key, char *output) {
    int i = 0;
    while (input[i] != '\0') {
        char c = input[i];
        if (isalpha(c)) {
            char base = isupper(c) ? 'A' : 'a';
            output[i] = (c - base + key) % 26 + base;
        } else {
            output[i] = c;
        }
        i++;
    }
    output[i] = '\0';
}

// Caesar cipher decryption
void decrypt_caesar_cipher(char *input, int key, char *output) {
    encrypt_caesar_cipher(input, 26 - key, output);
}

// Function to generate a random item
Item create_random_item() {
    Item item;

    // Set a random item name
    char *names[] = {"Apple", "Banana", "Orange", "Pear", "Grapes", "Pineapple", "Watermelon", "Strawberry", "Mango", "Kiwi"};
    int name_index = rand() % 10;
    strcpy(item.name, names[name_index]);

    // Set a random item category
    char categories[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L'};
    int category_index = rand() % 12;
    item.category = categories[category_index];

    // Set a random item manufacturer
    char *manufacturers[] = {"Apple Inc.", "Samsung", "Microsoft", "Google", "Amazon", "Sony", "Nike", "Adidas", "Puma", "Reebok"};
    int manufacturer_index = rand() % 10;
    strcpy(item.manufacturer, manufacturers[manufacturer_index]);

    // Set a random purchased price
    item.purchased_price = (float) (rand() % 100 + 1);

    // Set a random sale price
    item.sale_price = item.purchased_price * (1.0 + ((float) (rand() % 20 + 1) / 100.0));

    // Set a random quantity
    item.quantity = rand() % 10 + 1;

    // Set a random purchased date
    item.purchased_date = time(NULL) - (rand() % (30 * 24 * 60 * 60)); // up to 30 days ago

    // Set a random production date
    item.production_date = time(NULL) - (rand() % (365 * 24 * 60 * 60)); // up to 1 year ago

    // Set a random expiry date (between 1 and 3 years from the production date)
    item.expiry_date = item.production_date + ((rand() % 730) + 365) * 24 * 60 * 60;

    // Set a random store code
    item.store_code = rand() % 10000;

int main() {
    int bought_items[12] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
    float regular_price[12] = { 2.99, 4.99, 1.99, 3.49, 0.99, 1.49, 2.99, 3.99, 5.49, 4.49, 1.99, 2.49 };
    int promotion[12] = { 20, 10, 30, 15, 0, 5, 10, 20, 25, 15, 0, 5 };
    int returned_items[3] = { 5, 8, 11 };
    int encrypt_method[12] = { 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5 };
    int i, j;
    float sale_price, total_price = 0.0;
    char barcode[7];

    // Generate barcodes for each item and print the receipt
    printf("Receipt:\n");

    for (i = 0; i < 12; i++) {
        // Encrypt the barcode using the appropriate encryption method
        switch (encrypt_method[i]) {
        case 1:
            sprintf(barcode, "ABC%d", bought_items[i]);
            break;
        case 2:
            sprintf(barcode, "DEF%d", bought_items[i]);
            break;
        case 3:
            sprintf(barcode, "GHI%d", bought_items[i]);
            break;
        case 4:
            sprintf(barcode, "JKL%d", bought_items[i]);
            break;
        case 5:
            sprintf(barcode, "MNO%d", bought_items[i]);
            break;
        case 6:
            sprintf(barcode, "PQR%d", bought_items[i]);
            break;
        case 7:
            sprintf(barcode, "STU%d", bought_items[i]);
            break;
        default:
            sprintf(barcode, "UNK%d", bought_items[i]);
            break;
        }

        // Calculate the sale price of the item based on the promotion percentage
        sale_price = regular_price[i] * (1 - promotion[i] / 100.0);

        // Check if the item is being returned
        for (j = 0; j < 3; j++) {
            if (bought_items[i] == returned_items[j]) {
                sale_price = 0.0;
                break;
            }
        }

        // Print the barcode and the sale price of the item
        printf("Item %d: %s - $%.2f\n", i+1, barcode, sale_price);

        // Add the sale price to the total price
        total_price += sale_price;
    }

    // Print the total price
    printf("Total price: $%.2f\n", total_price);

    return 0;
}

Hi. This code hass errors when I add first cite. Thx

#include <stdio.h>

#include <string.h>

#define NUM_CITIES 5

struct City {

char name[20];

float precipitation;

};

void rank_cities(struct City cities[], int num_cities) {

struct City temp;

for (int i = 0; i < num_cities - 1; i++) {

for (int j = i + 1; j < num_cities; j++) {

if (cities[i].precipitation > cities[j].precipitation) {

temp = cities[i];

cities[i] = cities[j];

cities[j] = temp;

}

}

}

}

int main() {

struct City cities[NUM_CITIES];

float total_precipitation[NUM_CITIES] = {0};

float min_precipitation = 1000000, max_precipitation = -1;

int min_index, max_index;

for (int i = 0; i < NUM_CITIES; i++) {

printf("Enter the name of city #%d: ", i + 1);

scanf("%s", cities[i].name);

printf("Enter the amount of precipitation in mm for %s: ", cities[i].name);

scanf("%f", &cities[i].precipitation);

total_precipitation[i] = cities[i].precipitation;

if (cities[i].precipitation < min_precipitation) {

min_precipitation = cities[i].precipitation;

min_index = i;

}

if (cities[i].precipitation > max_precipitation) {

max_precipitation = cities[i].precipitation;

max_index = i;

}

}

float total = 0, average;

for (int i = 0; i < NUM_CITIES; i++) {

total += total_precipitation[i];

}

average = total / NUM_CITIES;

rank_cities(cities, NUM_CITIES);

printf("\nCity Rankings:\n");

for (int i = 0; i < NUM_CITIES; i++) {

printf("%d. %s (%.1f mm)\n", i + 1, cities[i].name, cities[i].precipitation);

}

printf("\nCity with minimum precipitation:\n%s (%.1f mm)\n", cities[min_index].name, min_precipitation);

printf("\nCity with maximum precipitation:\n%s (%.1f mm)\n", cities[max_index].name, max_precipitation);

printf("\nAverage precipitation across all cities: %.1f mm\n", average);

return 0;

}