Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Static Data Members:
A data member inside the class can construct as static data member. There are few
guidelines to be followed when declaring static data member.
The following program will give clear difference between static data count and regular data number members. The static data is common to all objects but regular data is unique to its object.
class item
{int number; static int count; public:
void getdata()
{++count;
number=count;
}
void putdata(void)
{cout<<"Count is "< cout<<"Number is "< } }; int item::count=0; int main() { clrscr(); item x,y,z; //Three object produced from class item x.getdata(); y.getdata(); z.getdata(); x.putdata(); The count is 3 and number is 1 y.putdata(); The count is 3 and number is 2 z.putdata(); The count is 3 and number is 3 return 0; } Static Member Function: The static member function can be specified like static data member. It works asc a static member data except the static member data is used in static member function. Rules of Static Member function are given below: The static member function can read static data member only from its class. The static member function is called using class name not object name. class_name::static_function_name( ); It can also be called using object.static_fun( ). The given program will illustrate how the static member function is worked. class find {static int count; int code; public: static void showcount(void) {cout<<"Count is " < } void setcode(void) {code = ++count; } void setcount(void) { cout<<"Code is " < } }; int find ::count=0; int main() {clrscr(); find x,y,z; x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2 z.setcode(); //Code and count is 3 find::showcount(); //Count is 3 x.setcount(); // Code is 1 for object x. y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z. x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6 //The value of code will increase from its previous value of that object. x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x. return 0; } Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
cout<<"Number is "< } }; int item::count=0; int main() { clrscr(); item x,y,z; //Three object produced from class item x.getdata(); y.getdata(); z.getdata(); x.putdata(); The count is 3 and number is 1 y.putdata(); The count is 3 and number is 2 z.putdata(); The count is 3 and number is 3 return 0; } Static Member Function: The static member function can be specified like static data member. It works asc a static member data except the static member data is used in static member function. Rules of Static Member function are given below: The static member function can read static data member only from its class. The static member function is called using class name not object name. class_name::static_function_name( ); It can also be called using object.static_fun( ). The given program will illustrate how the static member function is worked. class find {static int count; int code; public: static void showcount(void) {cout<<"Count is " < } void setcode(void) {code = ++count; } void setcount(void) { cout<<"Code is " < } }; int find ::count=0; int main() {clrscr(); find x,y,z; x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2 z.setcode(); //Code and count is 3 find::showcount(); //Count is 3 x.setcount(); // Code is 1 for object x. y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z. x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6 //The value of code will increase from its previous value of that object. x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x. return 0; } Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
};
int item::count=0;
int main()
{ clrscr();
item x,y,z; //Three object produced from class item x.getdata();
y.getdata();
z.getdata();
x.putdata(); The count is 3 and number is 1
y.putdata(); The count is 3 and number is 2 z.putdata(); The count is 3 and number is 3
return 0;
Static Member Function:
The static member function can be specified like static data member. It works asc a static member data except the static member data is used in static member function.
Rules of Static Member function are given below:
The given program will illustrate how the static member function is worked.
class find
{static int count;
int code;
public:
static void showcount(void)
{cout<<"Count is " < } void setcode(void) {code = ++count; } void setcount(void) { cout<<"Code is " < } }; int find ::count=0; int main() {clrscr(); find x,y,z; x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2 z.setcode(); //Code and count is 3 find::showcount(); //Count is 3 x.setcount(); // Code is 1 for object x. y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z. x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6 //The value of code will increase from its previous value of that object. x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x. return 0; } Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
void setcode(void)
{code = ++count;
void setcount(void)
{ cout<<"Code is " < } }; int find ::count=0; int main() {clrscr(); find x,y,z; x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2 z.setcode(); //Code and count is 3 find::showcount(); //Count is 3 x.setcount(); // Code is 1 for object x. y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z. x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6 //The value of code will increase from its previous value of that object. x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x. return 0; } Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
} }; int find ::count=0; int main() {clrscr(); find x,y,z; x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2 z.setcode(); //Code and count is 3 find::showcount(); //Count is 3 x.setcount(); // Code is 1 for object x. y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z. x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6 //The value of code will increase from its previous value of that object. x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x. return 0; } Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
int find ::count=0;
{clrscr();
find x,y,z;
x.setcode(); // Code and count is 1. y.setcode(); //Code and count is 2 find::showcount(); //Count is 2
z.setcode(); //Code and count is 3 find::showcount(); //Count is 3
x.setcount(); // Code is 1 for object x.
y.setcount(); // Code is 2 for object y. z.setcount(); // Code is 3 for object z.
x.setcode(); // Code and count is 4. y.setcode(); //Code and count is 5 z.setcode(); //Code and count is 6 find::showcount(); //Count is 6
//The value of code will increase from its previous value of that object.
x.setcount(); // Code is 4 for object x. y.setcount(); / Code is 5 for object x. z.setcount(); // Code is 6 for object x.
Since the count is declared as static it has only one copy irrespective of number of objects created. When static count function called again and again it will increase count for all the objects created simultaneously therefore the count will be uniform for all object, but for the data member code it is unique for each object created because it is not a static data member. Therfore from the above example there will only one value for count data member irrespective of number of objects constructed since it is a static data member, where as for code data member the value will be different for each object.
How to specify different memory sections for a variable using #Pragma?
Many modern cryptography algorithms require two numbers that are coprime, or sometimes referred to as relatively prime. Two numbers are coprime if their greatest common divisor is
complex coding with structure and file handling
Optimize and Profile a C++ library for speed Project Description: Optimize and Profile an existing C++ library for speed. This library uses OpenMP and OpenCV and C++ stan
example of friend
Write a program that finds the minimum total number of shelves, including the initial one required for this loading process.
Define the Classification of Operators in C Language? Depending on the function performed the operator can be classified as 1. Arithmetic Operator 2. Logical Operator 3. Inc
Explain Register Variable Computers have internal registers, which are used to keep data temporarily, before any operation can be performed. Intermediate results of the calcula
The break statement The break statement, which was already covered in the switch.. case, can also be used in the loops. When a loop statement is encountered in the loops the co
finds the average for all assignments for an individual student float getAverageForStudent(float scores[20][10], int student, int numAssignments) { } // finds the average for
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd