Explain the scope resolution operator, C/C++ Programming

Assignment Help:

The Scope Resolution Operator( :: )

Global variables are explained outside any functions and thus can be used by all the functions defined thereafter. However, if a global variable is declared with the similar name as that of a local variable of a function , the local variable is the one in the scope when the program implements that function . The C++ language provides the scope resolution operator ( :: ) to access the global variable thus overriding a local variable with the similar name. This operator is prefixed to the name of the global variable . The following example shows its usage.

                int global = 10;

                void main()

                 {

                                int global = 20;

 

                                printf(" Just writing global prints : %d\n", global);  

printf(" Writing ::global prints : %d\n", ::global);  

 }

The output of this program will be:

 Just writing global prints : 20  

 Writing ::global prints    : 10

 

 


Related Discussions:- Explain the scope resolution operator

Decode the code, Smugglers are becoming very smart day by day. Now they hav...

Smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they are send

Compiler related, Please give me a programming code of first & follow wit...

Please give me a programming code of first & follow with c or c++ laqnguage .When anyone give me the programming code of first & follow please explain every lines with the help

Harcourt social studies, how would land elevation have changed if Coronado ...

how would land elevation have changed if Coronado had traveled 150 miles due west from what is today Arizona instead of east toward New Mexico

Write a c program to compute the factorial, Write a C program to compute th...

Write a C program to compute the factorial of  5 i.e. 1x2x3x4x5 etc Write a C program to calculate the output Y for a given value of X for the following formula.       Y=X 2

Static data members and static member function, Static Data Members: A ...

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.

Program to design list in c, Program to design list in c: Write a prog...

Program to design list in c: Write a program in c to insert the values in list void main() { int i=0; char a[20]; clrscr(); printf("Enter the line\n");

Board coloring, coloring of elements in matrix form inm particular matrix.t...

coloring of elements in matrix form inm particular matrix.the color should not match with another color.

Convert coordinate - c++ program, Convert coordinate: class rect{  ...

Convert coordinate: class rect{                 private :                 float  x,y;                   public :                 void  input()

C program to returns the string, Program is to take two arguments and retur...

Program is to take two arguments and returns the string: Program is to take two arguments and returns the string which is larger the larger string has larger ascii value invok

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd