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Why do local variables lose their values between calls to the function in which they are defined?
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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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