Question

Using Structs on C code

1. At the top of your .c file, #include the header file you claimed.

#include “truck.h"

in my case.

Code:

#ifndef TRUCK_H
#define TRUCK_H

typedef struct truck_structure
{
   char make[20]; //model
   char typeOfDrivingLicense[50]; //commercial driving license required
   char typeOfTransmission[20]; //manual or automatic
   int yearManufactured; //when the truck was manufactured
   int numOfWheels; //how many wheels it has
   double weightEmpty; //the weight of the truck when it is empty
   double weightLoaded; // the weight of the truck when it is loaded
   double power; //the power
   char engineType[50]; //type of the engine
} Truck;

#endif

2. You must create five instances of the struct you claim.

That means you need to create five trucks

followed by C code in the main function to set the make, year, etc., etc. for each of the five trucks

Copy and paste will really make this easier, just make sure the information for every instance of your selected struct is different. No two trucks with the same name.

3.Save your populated structs – use the fwrite ( ) C library method

Answer 1

truck.cpp

#include "truck.h"
#include<stdio.h>

int main(){
Truck t1={"Ferrari","commercial","manual",2019,4,2000,2500,100,"electrical"};
Truck t2={"Ford","commercial","manual",2020,8,2300,2700,100,"electrical"};
Truck t3={"Audi","commercial","manual",2016,4,1800,2500,100,"electrical"};
Truck t4={"BMW","commercial","manual",2018,4,2100,2900,100,"electrical"};
Truck t5={"Maruti","commercial","manual",2019,4,1700,2500,100,"electrical"};

FILE *file;

// open file for writing
file = fopen ("data.txt", "w");

fwrite (&t1, sizeof(Truck), 1, file);
fwrite (&t2, sizeof(Truck), 1, file);
fwrite (&t3, sizeof(Truck), 1, file);
fwrite (&t4, sizeof(Truck), 1, file);
fwrite (&t5, sizeof(Truck), 1, file);

if(fwrite != 0)
printf("contents to file written successfully !\n");
else
printf("error writing file !\n");

// close file
fclose (file);

}