What is the error in the following code? Why is this wrong?
```
int f(int x)
{
int x;
// code for function body
}
```
What will be an ideal response?
The declaration of the variable x in the function body will be flagged by
the compiler as a multiple declaration of the variable Such an attempt at
(re)declaring a parameter violates the C++ rule that all identifiers be declared
exactly once, prior to use. The g++ compiler gives the following (somewhat
cryptic) error messages. (The -fsyntax-only option is to cause checking the
programs syntax, but not generate any other files in the event that there are no
errors. Most compilers have a similar option.)
g++ -fsyntax-only Problem10.cc
Problem10.cc: In function `int f(int)
Problem10.cc:3: declaration of x shadows a parameter
Compilation exited abnormally with code 1 at Mon Jul
10 07:10:07
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