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[hafez1]

scop چیه؟؟؟؟؟؟
این برنامه کلا ینی چی؟؟؟؟؟
#include <iostream>
using std::cout;
using std::endl;
void useLocal( void ); // function prototype
void useStaticLocal( void ); // function prototype
void useGlobal( void ); // function prototype
int x = 1; // global variable
int main()
{
int x = 5; // local variable to main
cout << "local x in main's outer scope is " << x << endl;
{ // start new scope
int x = 7;
cout << "local x in main's inner scope is " << x << endl;
} // end new scope








cout << "local x in main's outer scope is " << x << endl;



useLocal (); // useLocal has local x useStaticLocal(); // useStaticLocal has static local x useGlobal(); // useGlobal uses global x useLocal(); // useLocal reinitializes its local x
useStaticLocal(); // static local x retains its prior value useGlobal(); // global x also retains its value



cout << "\nlocal x in main is " << x << endl;



return 0; // indicates successful termination



} // end main











// useLocal reinitializes local variable x during each call
void useLocal( void )
{
int x = 25; // initialized each time useLocal is called



cout << endl << "local x is " << x
<< " on entering useLocal" << endl;
++x;
cout << "local x is " << x
<< " on exiting useLocal" << endl;



} // end function useLocal







// useStaticLocal initializes static local variable x only the
// first time the function is called; value of x is saved
// between calls to this function
void useStaticLocal( void )
{
// initialized first time useStaticLocal is called. static int x = 50;



cout << endl << "local static x is " << x
<< " on entering useStaticLocal" << endl;
++x;
cout << "local static x is " << x
<< " on exiting useStaticLocal" << endl;



} // end function useStaticLocal















// useGlobal modifies global variable x during each call
void useGlobal( void )
{
cout << endl << "global x is " << x
<< " on entering useGlobal" << endl;
x *= 10;
cout << "global x is " << x
<< " on exiting useGlobal" << endl;



} // end function useGlobal