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I have about 40 questions. (all the answers to the questions are of either int or float data type)
I will display the question and ask the user to input his/her answer.
Then I will check if the answer is correct or not.
I need to implement this program in object oriented programming.
I thought about doing it this way,questions by questions..but is there another way of doing this? Please help me..
The code below is sort of a pseudocode . I use c++ .
class workout{
private:
float variables...;
public:
workout();
workout(float variables...);
void answers();
int Display();
~workout();
};
...
void workout::answers(){
declare variables;
display question1;
input answer1
check if correct
display question2;
input answer2
check if correct
display question3;
..and so on..
}
workout::~workout(){
}
int main(){
...
return 0;
}
Well you could have a Question class, and then go from there. Here's an example.
class Question
{
public:
std::string question
float answer;
Question(std::string _question, float _answer)
: question(_question), answer(_answer) {}
void Display() {}
bool Check(float input) {}
};
And then maybe create an array of questions?
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I don't fully understand nor did i find anything online about this topic but this code(cut down so it wont be 500 lines of code):
class Character{
public:
int MaxHP;
int currentHP;
currentHP = MaxHP;
int getHP()
{
return CurrentHP;
}
Character(int h){
maxHP=h
};
~Character(){};
};
int main()
{
Character warrior(300)
cout<<getHP();
return 0;
};
maxHP = 300
CurrentHP = -875000
now trying to acces the value of currentHP i get -87878....
My question is what is the problem?
If you wish to initialize a private variable it's better done in a constructor:
class Character{
private:
int MaxHP;
int currentHP;
public:
Character() : MaxHP(0), currentHP(MaxHP){}
}
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I have relatively less experience with C++ coding, and I'm working on a project that requires me to use classes, pointers and objects in C++. I'm facing some basic problems while practising coding.
This is what part of my .cpp file looks like:
A::A(int x, int y):CD()
{
//some code
}
B::B(int z):CD()
{
//some code
}
If I need to pass values from A to B, how would I be able to do it in such a scenario? Could anyone please clarify and help me.
Edit: According to the code I have, CD is also defined as a class like A and B.
Here A is a class and B is another class right,
Let's take a simple addition example
A(int x,int y)
{
b=new B(x+y);//let be a reference of class B
//this will call B's constructor
}
B(int z)
{
this.z=z;//lets's assume that z is a variable in B class
}
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I can't see to find the problem in my code. Nor the solution on the internet. I can see that i can create the code in a different way but i need to know how to work with it written like this:
class Triunghi{
int l1=0;//latura1
int l2=0;//latura2
int ba=0;//baza
int p=0;//perimetru
public:
Triunghi(){}
Triunghi(int a):l1(a){}
Triunghi(int a,int b):l1(a),l2(b){}
Triunghi(int a,int b,int c):l1(a),l2(b),ba(c){}
Triunghi(int a,int b,int c,char *msg):l1(a),l2(b),ba(c){
cout<<msg<<""<<l1<<l2<<ba<<endl;
}
Triunghi(Triunghi &A){
l1=A.l1;
l2=A.l2;
ba=A.ba;
}
~Triunghi(){
}
int Perimetru()
{
p=l1+l2+ba;
return (p);
}
};
It works fine there are no errors but i cant seem to give value to l1, l2 and ba, to use them in function 'Perimetru'.
This is how my main looks.
int main()
{
Triunghi tri;
Triunghi(1,2,3);
tri.Perimetru();
return 0;
}
How to make it work?
Triunghi tri;
Triunghi(1,2,3);
This doesn't do what you think it does. tri is created with default constructor, so all of your members are set with their in-class default values, meaning 0. Then, you create temporary object Triunghi, and you don't even use it. What you might wanted to do instead is:
Triunghi tri(1,2,3);
Then Perimetru() returns 6 as expected.
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How do i write it in c++ ??
// in PAWN ( Procedural Language )
enum e_player_data
{
id, // Integer
username[24] // string
};
new PlayerData[50][e_player_data];
/*
so i can access it like PlayerData[1][id] = 1; or PlayerData[1][username] = "Firstname_Lastname";
*/
Can someone code it to c++ for me?
You can use a std::map:
typedef std::map<int,std::string> Player;
Player p;
// add a player:
int id = 0;
p[id] = "Max Power";
As tobi303 wrote in the comment, you can use a std::map to accomplish this.
struct e_player_data
{
int id,
std::string username
};
std::map<int,e_player_data> PlayerData;
PlayerData[1].id = 1;
PlayerData[2].username = "Firstname_Lastname";
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I have an private property in my class and I want to add some code on its setter, how can I accomplish that?
I might do that using method but I don't want to just to avoid using property.
private:
float damage;
You can replace your plain old data type with a class type to do what you want:
class Damage
{
public:
Damage& operator=(float x) { value = x; /* add code here*/ }
operator float() const { return value; }
private:
float value;
};
Then just replace your float with Damage and you can make it behave how you want.