Reference variable and pointer in C++ programs

Todays topic in our C++ tutorial is Comparision between Reference variable and pointer in C++ programs.

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Now we will see the advantage of referencing in C++ programs. Both pointer and reference variable have the same effect while they deals with a variable. But reference variable works in more elegant style. Referencing provides a clean, elegant and efficient way to pass arguments to functions that intend to change their values.

In this C++ program,  we will create two structure type variables to store three types of values ( name, age and salary ) in each of them. Then we will change the values using two functions – for one variable 1st function will take address of the variable and other function will take reference of the second variable.

#include< iostream.h >

#include< conio.h >

#include< string.h >

struct tag

{

char name[30];

int age;

};

typedef struct tag EMP;

void fun1(EMP *emp1)

{

strcpy(emp1->name,"Shatavisha");

emp1->age=7;

}

void fun2(EMP &emp2)

{

strcpy(emp2.name,"Sarbani");

emp2.age=36;

}

void main()

{

clrscr();

EMP emp1={"Dhananjoy",42};

EMP emp2={"Sudhyashil",1};

fun1(&emp1);

cout<< endl<< emp1.name<< ","<< emp1.age;

fun2(emp2);

cout<< endl<< emp2.name<<","<< emp2.age;

getch();

}