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

Pointers, In this sub-task will you implement three functions for the final...

In this sub-task will you implement three functions for the final three function prototypes that will do exactly the same as the three functions that you have just written. This ti

C program to add, C program to add, average and deviation of numbers: v...

C program to add, average and deviation of numbers: void main() {                 int sum=0,a[10],i;                 float avg=0,dev,vari=0,var;                 pri

Decodethecode, how to decode the numerals to string..

how to decode the numerals to string..

Area, write a program to find the area under the curve y=f(x) between x=a &...

write a program to find the area under the curve y=f(x) between x=a & x=b

#task1, program for factorial

program for factorial

C program for exchange first & last character, Normal 0 false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Computes the amount of postage count even or odd, (a) Write a procedure (co...

(a) Write a procedure (count-even n) that counts the number of even digits in the decimal representation of the number n. For example, (count-even 234) should return 2. (b) Writ

C program for multiplication table , C Program for MULTIPLICATION TABLE ...

C Program for MULTIPLICATION TABLE   main() {           int a, b=1, c, d;           char ch;           clrscr();           while(ch!='n')           {

Do i require checking for null before delete p?, No. it's not required T...

No. it's not required The C++ language guarantees that delete p will do nothing if p is equivalent to NULL. As you might get the test backwards, and as most testing methodologie

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