[user02@FC4 Lesson10]$ cat -n useparam.cpp

   1  #include <iostream>
   2  using namespace std;
   3
   4  void show_number(int value)
   5  {
   6     cout << "The parameter's value is " << value << endl;
   7  }
   8
   9  int main()
  10  {
  11     show_number(1);
  12     show_number(1001);
  13     show_number(-532);
  14
  15     return 0;
  16  }

[user02@FC4 Lesson10]$ g++ -o useparam useparam.cpp
[user02@FC4 Lesson10]$ ./useparam
The parameter's value is 1
The parameter's value is 1001
The parameter's value is -532
[user02@FC4 Lesson10]$