A reference variable is an alias, that is, another name for an already existing variable in C++. Once a reference is initialized with avariable, either the variable name or the reference name may be used to refer to the variable.
They can be used like normal variables. ‘&’ operator is needed only at the time of declaration. Also, members of an object reference can be accessed with dot operator (‘.’),
For example,
int amount =10;
int rupees;
rupees=&amount;
cout<<“rupess”<< rupess;
cout<<“amount”<< amount;
output:
rupess 10
amount 10
now we do any update in amount variable , it will affect also in rupees variable. Same for vice versa.
for example,
amount=amount + 20;
cout<<rupess;
output: 30
To learn more about variable, data types , C++ Language , Operators.
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