※ 引述《BGrap (smoke the mic)》之銘言：
: #include <iostream>
: using std::cout;
: using std::cin;
: using std::endl;
: int TripleByValue( int );
: int TripleByReference( int & );
: int main()
: {
: int count;
: cout << "Enter an integer" << endl;
: cin >> count;
: cout << "result done by TBV = " << TripleByValue( count ) << endl
: << "and then the count after TBV working = " << count << endl
: << "\nresult done by TBR = " << TripleByReference( count ) << endl
: << "and then the count after TBR working = " << count << endl;
: return 0;
: }
: int TripleByValue( int x )
: {
: int z;
: z= x*3;
: return z;
: }
: int TripleByReference( int &y )
: {
: y = y*3;
: return y;
: }
: -------------------------------------------
: work out
: Enter an integer
: 4
: result done by TBV = 36
^^^^^^^^^^^^^^^^^^^^^^^^^
這個為什麼是36 我要的是12
: and then the count after TBV working = 12
: result done by TBR = 12
: and then the count after TBR working = 4
: Press any key to continue
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