你好我需要帮助理解愚蠢的C ++,任何人都可以帮助我理解如何使用类来计算MPG。这就是我到目前为止所拥有的。 我希望自己真的想要变得更好,但每个项目都在踢我的课堂。
#include <iostream>
using namespace std;
class cars{
double miles;
double gallons;
private:
double miles[6] = {240.5, 300.0, 320.5, 280.7, 190.7, 265.3};
double gallons[6] = {16.4, 15.6, 17.2, 15.4, 13.7, 16.9};
public:
cars(double m, double g) : miles(m), gallons(g){}
double mpg(void) {return miles / gallons;}
};
int main() {
int i;
cout << "Index\tMiles\tGallons\tMPG\n";
for (i=0; i<6; i++) {
cout << i << "\t" << miles[i] << "\t" << gallons[i] << endl;
}
char z; cin >> z;
}
我没有上课
#include <iostream>
using namespace std;
double miles[6] = {240.5, 300.0, 320.5, 280.7, 190.7, 265.3};
double gallons[6] = {16.4, 15.6, 17.2, 15.4, 13.7, 16.9};
float mpg[6] = {0,0,0,0,0,0};
int i;
float mpgCal(){
cout << mpg = miles/gallons;
return mpg;
}
int main() {
cout << "Index\tMiles\tGallons\tMPG\n";
for (i=0; i<6; i++) {
cout << i << "\t" << miles[i] << "\t" << gallons[i] << "\t" << mpg[i] << endl;
}
char z; cin >> z;
}
答案 0 :(得分:1)
注意:没有编译这个,因为我没有编译器方便的ATM。
你需要一系列汽车,而不是双打汽车。你的班级需要提供一种获得里程和加仑的方法。
#include <iostream>
using namespace std;
class car{
private:
double miles;
double gallons;
public:
car(double m, double g) : miles(m), gallons(g){}
double getMPG(void) const {return miles / gallons;}
double getMiles(void) const {return miles;}
double getGallons(void) const {return gallons;}
};
car cars[6]={
car(240.5, 16.4),
car(300.0, 15.6),
car(320.5, 17.2),
car(280.7, 15.4),
car(190.7, 13.7),
car(265.3, 16.9)};
int main() {
int i;
cout << "Index\tMiles\tGallons\tMPG\n";
for (i=0; i<6; i++) {
cout << i << "\t" << cars[i].getMiles() << "\t" << cars[i].getMiles() << "\t" << cars[i].getMPG() << endl;
}
char z; cin >> z;
}
答案 1 :(得分:0)
你的代码有点乱。 如果你想使用汽车的概念,你的班级神秘是&#34;汽车&#34;。 或者你想创建一个类成员来计算MPG?
我认为你应该考虑这些术语:
您想使用哪种C ++?
C ++ 11关于什么编译器?
反正:
MAIN
#include <iostream>
#include "Car.h"
using namespace std;
int main(int argc, const char * argv[]) {
const int MAX = 2;
Car cars[MAX] = {
Car(240.5,16.4),
Car(300.0,15.6),
};
int i;
cout << "Index\tMiles\tGallons\tMPG\n";
for (i=0; i<MAX; i++) {
Car c = cars[i];
cout << i << "\t" << c.getMiles() << "\t" << c.getGallons()<< "\t" << c.mpg() << endl;
}
char z; cin >> z;
return 0;
}
car.h
class Car{
private:
double miles;
double gallons;
public:
Car(double m, double g);
double mpg(void);
double getMiles();
double getGallons();
};
car.cpp
#include "Car.h"
Car::Car(double m, double g)
{
miles = m;
gallons = g;
}
double Car::mpg(void)
{
double d = miles / gallons;
return d;
}
double Car::getMiles(void)
{
return miles;
}
double Car::getGallons(void)
{
return gallons;
}
输出:
Index Miles Gallons MPG
0 240.5 16.4 14.6646
1 300 15.6 19.2308