Term
class Object {
public:
static int counter;
};
int main() {
cout << Object::counter;
}
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Definition
ERROR
static variables need to be initialized, outside of the class definition
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Term
class Object {
public:
static int counter = 0;
};
int main() {
cout << Object::counter;
}
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Definition
ERROR
static variables NEED to be defined OUTSIDE class definition |
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Term
class Object {
public:
static int counter = 0;
};
Object::counter = 0;
int main() {
cout << Object::counter;
}
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Definition
ERROR,
need to state data type |
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Term
class Object {
public:
static int counter = 0;
};
int Object.counter = 0;
int main() {
cout << Object::counter;
}
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Definition
ERROR,
need to use :: scope |
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Term
class Object {
public:
static int counter;
};
int Object::counter = 0;
int main() {
cout << Object::counter;
}
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Definition
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Term
class Object {
public:
static int counter;
}P0;
int Object::counter = 0;
int main() {
cout << P0::counter;
}
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Definition
ERROR, instances need to use .counter |
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Term
class Object {
public:
static int counter;
}P0;
int Object::counter = 0;
int main() {
cout << P0.counter;
}
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Definition
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Term
class Object {
public:
static int counter;
Object() {counter++;}
};
int Object::counter = 0;
int main() {
Object obj, obj2, obj3;
cout << obj.counter << endl;
obj.counter++;
cout << obj2.counter << endl;
Object::counter++;
cout << obj3.counter << endl;
}
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Definition
|
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Term
class Object {
public:
static int counter;
int id;
Object() {id = counter++;}
};
int Object::counter = 0;
int main() {
Object obj, obj2, obj3;
cout << obj.id << endl;
obj.id++;
cout << obj2.id << endl;
Object::counter++;
cout << obj3.id << endl;
}
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Definition
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Term
class Object {
public:
static int counter;
int id;
Object() {id = counter++;}
};
int Object::counter = 0;
int main() {
cout << Object::counter << endl;
Object objs[100];
cout << Object::counter << endl;
}
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Definition
|
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Term
class Object {
public:
static int counter;
int id;
};
int main() {
Object obj;
}
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Definition
Compiles
counter wasnt referenced yet so no issues in runtime. counter needs to be initialized. |
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Term
class Object {
public:
static int counter;
int id;
Object() {
id = counter++;
}
};
int Object::counter = 0;
class Subject {
public:
static Object obj;
};
int main() {
Subject s1;
s1.obj.id = 1;
}
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Definition
ERROR
Subject::obj wasnt initialized
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