Call by reference, C/C++ Programming

Assignment Help:

Call by reference:

Arguments to a function can be passed in two way; one by call by value and other by call

by reference.  Call by value is passed either through a constant or variable.  The call by reference is passed through address operator (&).  In C the function definition argument must be declared as pointer variable to pass by reference, where as in C++ the call by reference can be used without declaring the function arguments as pointer variables.  But in C++ both pointer argument method and without pointer argument can be adopted.

 

void f_ref(int &a, int &b); // void f_ref(int, int) is wrong for reference variable;

void main( )

{int a, b;

f_ref(a, b); // The value a is 10 and b is 20.

 

 

}

void f_ref(int &x, int &y)

{x =10;

y=20;

}


Related Discussions:- Call by reference

Explain the unary minus operator, Unary Minus Operator( Negation) This ...

Unary Minus Operator( Negation) This operand can be used to negate the value of a variable. It is also used to state a negative number, here a minus(-) sign is prefixed to the

Inheritance, example of program to add two number

example of program to add two number

Palindrome, A palindrome is a string that reads the same from both the ends...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Write a recursive function to generate anagrams, An anagram is a type of wo...

An anagram is a type of word play, the result of rearranging the letters of a word or phrase to produce a new word or phrase. For example the anagram of tea is tea, tae, eat, eta,

What if one can''t wrap the local in an artificial block?, What if one can'...

What if one can''t wrap the local in an artificial block?

Mr. D. Mclean, A Network of routers have been configured for the ...

A Network of routers have been configured for the purposes of handling data traffic within your company. You would like to have an application that does a network

C program, what will be the c program for ideal gas equation.

what will be the c program for ideal gas equation.

Explain the standard input/output iostream library, Question 1 Implemen...

Question 1 Implement a class stack which simulates the operations of the stack allowing LIFO operations. Also implement push and pop operations for the stack 2 Explain the c

Board coloring, n this problem u given a board in which some of the element...

n this problem u given a board in which some of the elements are placed as shown in diagram below .each element represent a color .fill the other elements in the board such that no

Basic coding syntax errors, I have a program for school and I am not unders...

I have a program for school and I am not understanding why one of the variables gets skipped or the arithmetic operators aren''t having any effect as I have tryed defining it sever

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