is it possible to use two different structures in the same code? - c

Question

I need to add another structure to my code and I wish to know if this is possible?
Below is a snippet of what I want to do.
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include "math.h"
#define MAX_CARS 10
struct car {
double vel, position, desired_vel;
int index, on_network;
};
typedef struct car Car;
struct car_2 {
double vel_2, position_2, desired_Vel_2;
int index, on_network;
};
typedef struct car_2 Car_2;

Answer 1

You can have unlimited struct types in your code. In this instance though, as they both are identical, you can re-use your Car struct and make separate instances with it.
Car car1;
Car car2;
car1.vel = 5.0;
car2.vel = 10.0;

Answer 2

Yes you can use as many as you want. Example code as below:
#include <stdio.h>
struct car_dim
{
int feet;
float inch;
} card;
struct showroom_loc
{
int lid;
int pin;
} carl;
int main()
{
printf("enter the information for card struct\n");
printf("Enter feet: \n");
scanf("%d", &card.feet);
printf("Enter inch: \n");
scanf("%f", &card.inch);
printf("enter the information for car location struct\n");
printf("enter lid e\n");
scanf("%d", &carl.lid);
printf("Enter pin: \n");
scanf("%f", &carl.pin);
printf("struct card= %d\'-%.1f\"", card.feet, card.inch);
printf("\nstruct carl= %d\'-%.1f\"", carl.lid, carl.pin);
return 0;
}

Answer 3

You can use as many structures in your code as you like as long as their name is different.
However in your example, the members of your structures are identical, maybe you want to do something like this?
#define MAX_CARS 10
struct car {
double vel, position, desired_vel;
int index, on_network;
};
typedef struct car Car;
int main() {
// You can define as many instances of type "Car" as you want
Car car1;
Car car2;
Car car3;
// Or you can use arrays
Car cars[MAX_CARS];
cars[0].desired_vel = 100.0;
cars[1].desired_vel = 120.0;
// and so on
return 0;
}