Why do local variables lose their values between calls to the function in which they are defined?
Expert Solution & Answer
Program Plan Intro
Function:
One of the building blocks of C++ program is functions; it contains a group of statements which are used to perform a specific task and the executable segments in a program.
The function “main()” is the most important function in a program, because the “main()” function is the starting point of the program.
The main advantage of using function is that it reuses and reduce the code size of the program; because a function can be called for multiple times in a program.
Local variables:
A variable which is declared inside the function or is passed as an argument to the function is termed as a local variable.
The scope of the local variables is only within the block of a function in which they are defined.
The local variable cannot be accessed by the segments outside the function block.
Explanation of Solution
Reason for the local variables losing their scope:
The local variables will lose the scope outside the block in which they are defined.
The reason is the memory for the local variable which is created at the beginning of the function.
And the memory which has been created will get destroyed when the function ends.
Therefore, the value of the local variable is lost, when it is called outside the function.
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