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The assignment operator assigns a value to a variable. a = 5;This statement assigns the integer value 5 to the variable a. The part at the left of the assignment operator (=) is known as the lvalue (left value) and the right one as the rvalue (right value). The lvalue has to be a variable whereas the rvalue can be either a constant, a variable, the result of an operation or any combination of these.The most important rule when assigning is the right-to-left rule: The assignment operation always takes place from right to left, and never the other way:a = b;This statement assigns to variable a (the lvalue) the value contained in variable b (the rvalue). The value that was stored until this moment in a is not considered at all in this operation, and in fact that value is lost.Consider also that we are only assigning the value of b to a at the moment of the assignment operation. Therefore a later change of b will not affect the new value of a.For example, let us have a look at the following code - I have included the evolution of the content stored in the variables as// assignment operator#include <iostream>using namespace std;int main (){  int a, b;         // a:?,  b:?  a = 10;           // a:10, b:?  b = 4;            // a:10, b:4  a = b;            // a:4,  b:4  b = 7;            // a:4,  b:7  cout << "a:";  cout << a;  cout << " b:";  cout << b;  return 0;}output:a:4 b:7This code will give us as result that the value contained in a is 4 and the one contained in b is 7. Notice how a was not affected by the final modification of b, even though we declared a = b earlier (that is because of the right-to-left rule).A property that C++ has over other programming languages is that the assignment operation can be used as the rvalue (or part of an rvalue) for another assignment operation. For example:a = 2 + (b = 5);is equivalent to:b = 5;a = 2 + b;that means: first assign 5 to variable b and then assign to a the value 2 plus the result of the previous assignment of b (i.e. 5), leaving a with a final value of 7.The following expression is also valid in C++:a = b = c = 5;It assigns 5 to the all three variables: a, b and c.

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You?re given a simple code for the class Bank Customer. Write the following functions:* Copy constructor* = operator overload* == operator overload* + operator overload (customers? balances should be added up, as an example of joint account between husband and wife)

C++

Topic: Operators

Explain about Assignment (=) ?

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C++

Topic: Operators

Explain about Assignment (=) ?

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