131: Mainline

What you have learned about parameters also applies to local variables:

• Local variables are available only inside the function in which they are declared. Thus, the assignment of a local variable has no effect on other, identically named variables or parameters that appear in the definitions of other functions.
• The values of a function's local variables are not available after that function has returned.
• When one function calls another, the values of the local variables in the calling function are not available during the execution of the called function.