C Program structure: Car rental cost calculation

C programming related to structures: Exercise-9 with Solution

Design a structure named "Car" to store details like car ID, model, and rental rate per day. Write a C program to input data for three cars, calculate the total rental cost for a specified number of days, and display the results.

Sample Solution:

C Code:

#include <stdio.h>

// Define the structure "Car"
struct Car {
    int carID;
    char model[50];
    float rentalRatePerDay;
};

// Function to calculate the total rental cost for a specified number of days
float calculateRentalCost(struct Car car, int days) {
    return car.rentalRatePerDay * days;
}

int main() {
    // Declare variables to store details for three cars
    struct Car car1, car2, car3;
    int rentalDays;

    // Input details for the first car
    printf("Input details for Car 1:\n");
    printf("Car ID: ");
    scanf("%d", &car1.carID);
    printf("Model: ");
    scanf("%s", car1.model); // Assuming models do not contain spaces
    printf("Rental Rate per Day: ");
    scanf("%f", &car1.rentalRatePerDay);

    // Input details for the second car
    printf("\nInput details for Car 2:\n");
    printf("Car ID: ");
    scanf("%d", &car2.carID);
    printf("Model: ");
    scanf("%s", car2.model);
    printf("Rental Rate per Day: ");
    scanf("%f", &car2.rentalRatePerDay);

    // Input details for the third car
    printf("\nInput details for Car 3:\n");
    printf("Car ID: ");
    scanf("%d", &car3.carID);
    printf("Model: ");
    scanf("%s", car3.model);
    printf("Rental Rate per Day: ");
    scanf("%f", &car3.rentalRatePerDay);

    // Input the number of rental days
    printf("\nEnter the number of rental days: ");
    scanf("%d", &rentalDays);

    // Calculate and display the total rental cost for each car
    printf("\nTotal Rental Cost for Car 1: %.2f\n", calculateRentalCost(car1, rentalDays));
    printf("Total Rental Cost for Car 2: %.2f\n", calculateRentalCost(car2, rentalDays));
    printf("Total Rental Cost for Car 3: %.2f\n", calculateRentalCost(car3, rentalDays));

    return 0;
}

Output:

Input details for Car 1:
Car ID: 123
Model: AB2012
Rental Rate per Day: 200

Input details for Car 2:
Car ID: 134
Model: XY2013
Rental Rate per Day: 150

Input details for Car 3:
Car ID: 135
Model: JU2012
Rental Rate per Day: 180

Enter the number of rental days: 10

Total Rental Cost for Car 1: 2000.00
Total Rental Cost for Car 2: 1500.00
Total Rental Cost for Car 3: 1800.00

Explanation:

In the exercise above,

• The "Car" structure is defined with members 'carID', 'model', and 'rentalRatePerDay'.
• The "calculateRentalCost()" function calculates the total rental cost for a specified number of days for a given car.
• The program prompts the user to input details for three cars and the number of rental days.
• It then calculates and displays the total rental cost for each car.

Flowchart:

C Programming Code Editor:

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