Question

#include

#include

#include

#define WORDLENGTH 30

#define MAX 100

struct car

{

char model[WORDLENGTH];

int year;

int milage;

};

typedef struct car Car;

Car createCar(char model[], int year, int milage)

{

Car c;

strcpy(c.model, model);

c.year = year;

c.milage = milage;

return c;

}

void regCars(Car reg[], int *pNrOfCars)

{

char again[WORDLENGTH] = "yes", model[WORDLENGTH];

int year, milage;

while (strcmp(again, "yes") == 0)

{

printf("Ange model:");

scanf("%s%*c", model);

printf("Ange year:");

scanf("%d%*c", &year);

printf("Ange milage:");

scanf("%d%*c", &milage);

reg[*pNrOfCars] = createCar(model, year, milage);

(*pNrOfCars)++;

printf("Do you rigister another car? enter yes or no:\n");

scanf("%s%*c", again);

}

}

void printRegister(Car reg[], int nrOfCars)

{

int i = 0;

for (i = 0; i < nrOfCars; i++)

{

printf("%d. Car: %s, Year model: %d, Mil: %d\n", i + 1, reg[i].model, reg[i].year, reg[i].milage);

}

}

int main()

{

Car carRegister[MAX];

int nrOfCars = 0;

char r[100];

printf("register a car\n");

regCars(carRegister, &nrOfCars);

printf("Do you want to print the cars details or quit? entr print or quit:\n");

scanf("%s", r);

if (strcmp(r, "print") == 0)

printRegister(carRegister, nrOfCars);

else

exit(1);

return 0;

}

Add a menu item that is "Increase miles" where you should be able to select a car by entering its location in the register and then can increase the number of miles it has traveled. So to increase the fiat's miles above, enter 3.

Edit: this question is a following question to a previous one which was:

In question number one we should Add the function that prints all cars in the register in our car register program. The printout should look as follows:
1. Car: Volvo, Year model: 2011, Mil: 3000
2. Car: Saab, Year model: 2000, Mil: 5000
Car: Fiat, Model year: 1999, Mil: 40000

Then in a separate question we should Change the program so that it starts with a menu according to
below. Depending on what you choose, the correct function is called. Then the user gets another chance to choose until he chooses to quit.

• register cars

• Print all cars
• Exit

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#define WORDLENGTH 30

#define MAX 100

struct car{
char model[WORDLENGTH];

int year;
int milage;

};
typedef struct car Car;

void printCar(Car c){
printf("Bil: %s, Arsmodell: %d, mil: %d\n",c.model,c.year,c.milage);

}

Car createCar(char model[],int year, int milage){

Car c;

strcpy(c.model,model);

c.year=year;

c.milage=milage;

return c;

}

void regCars(Car reg[],int *pNrOfCars){
char again[WORDLENGTH] = "ja", model[WORDLENGTH];

int year,milage;
while(strcmp(again,"ja")==0){

printf("Ange model:");
scanf("%s%*c",model);
printf("Ange year:");
scanf("%d%*c",&year);
printf("Ange milage:");

scanf("%d%*c",&milage);

reg[*pNrOfCars]=createCar(model,year,milage);

(*pNrOfCars)++;

printf("Vill du fortsatta? (ja/nej)");

scanf("%s%*c",again); }

}

void printRegister(Car reg[], int nrOfCars){}

int main(){
Car carRegister[MAX];
int nrOfCars=0;

regCars(carRegister,&nrOfCars);

printRegister(carRegister, nrOfCars);

return 0;

}

the answer was:

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#define WORDLENGTH 30

#define MAX 100

struct car{
char model[WORDLENGTH];

int year;
int milage;

};
typedef struct car Car;




Car createCar(char model[],int year, int milage){

Car c;

strcpy(c.model,model);

c.year=year;

c.milage=milage;

return c;

}

void regCars(Car reg[],int *pNrOfCars){
char again[WORDLENGTH] = "yes", model[WORDLENGTH];

int year,milage;
while(strcmp(again,"yes")==0){

printf("Ange model:");
scanf("%s%*c",model);
printf("Ange year:");
scanf("%d%*c",&year);
printf("Ange milage:");

scanf("%d%*c",&milage);

reg[*pNrOfCars]=createCar(model,year,milage);

(*pNrOfCars)++;

printf("Do you rigister another car? enter yes or no:\n");

scanf("%s%*c",again); }

}

void printRegister(Car reg[], int nrOfCars){
    int i=0;
    for(i=0;i<nrOfCars;i++)
    {
        printf("%d. Car: %s, Year model: %d, Mil: %d\n",i+1,reg[i].model,reg[i].year,reg[i].milage);
    }
}

int main(){
Car carRegister[MAX];
int nrOfCars=0;
char r[100];
printf("register a car\n");
regCars(carRegister,&nrOfCars);
printf("Do you want to print the cars details or quit? entr print or quit:\n");
scanf("%s",r);
if(strcmp(r,"print")==0)
printRegister(carRegister, nrOfCars);
else 
exit(1);
return 0;

}

Answer 1

Updated program with an 'Increase miles' option is below:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define WORDLENGTH 30
#define MAX 100

struct car{
char model[WORDLENGTH];
int year;
int milage;
};
typedef struct car Car;

Car createCar(char model[],int year, int milage){
Car c;
strcpy(c.model,model);
c.year=year;
c.milage=milage;
return c;
}

void regCars(Car reg[],int *pNrOfCars){
char again[WORDLENGTH] = "yes", model[WORDLENGTH];
int year,milage;
while(strcmp(again,"yes")==0){
printf("Ange model:");
scanf("%s%*c",model);
printf("Ange year:");
scanf("%d%*c",&year);
printf("Ange milage:");
scanf("%d%*c",&milage);
reg[*pNrOfCars]=createCar(model,year,milage);
(*pNrOfCars)++;
printf("Do you rigister another car? enter yes or no:\n");
scanf("%s%*c",again);
}
}

void printRegister(Car reg[], int nrOfCars){
int i=0;
for(i=0;i<nrOfCars;i++)
printf("%d. Car: %s, Year model: %d, Mil: %d\n",i+1,reg[i].model,reg[i].year,reg[i].milage);
}

void increaseMiles (Car reg[], int nrOfCars) {
int carno, newmiles;
  
printf ("Enter car no to increase miles:");
scanf ("%d%*c", &carno);
printf ("Enter new no of miles for this car:");
scanf ("%d%*c", &newmiles);
  
if ((carno > 0) && (carno <= nrOfCars) )
reg[carno-1].milage = newmiles;

}

int main(){
Car carRegister[MAX];
int nrOfCars=0;
char r[100];
printf("register a car\n");
regCars(carRegister,&nrOfCars);
while (1== 1) {
printf("Do you want to print cars details, increase miles or quit? enter print, miles or quit:\n");
scanf("%s",r);
if(strcmp(r,"print")==0)
printRegister(carRegister, nrOfCars);
else if(strcmp(r,"miles")==0)
increaseMiles (carRegister, nrOfCars);
else
break;
}
return 0;
}