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Re: Need help with my C++ code [message #445291 is a reply to message #445206]

Fri, 25 March 2011 14:30

Omar007
Messages: 1711
Registered: December 2007
Location: Amsterdam

Karma:

General (1 Star)

I'm not a C++ master nor am I writing this down with any reference. This is from the top of my head so it may contain faulty information.

---
A call by value makes a duplicate and does not affect the original.
Call by reference modifies the original value you pass.

Call by value

void main()
{
    int a = 10;
    somefunction(a);
    cout << a; //10
}


void somefunction(int a)
{
    a = 20;
}

Call by reference

void main()
{
    int a = 10;
    somefunction(a);
    cout << a; //20
}


void somefunction(int& a)
{
    a = 20;
}

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[Message index]

		Need help with my C++ code By: _SSnipe_ on Wed, 23 March 2011 12:15
		Re: Need help with my C++ code By: _SSnipe_ on Wed, 23 March 2011 13:16
		Re: Need help with my C++ code By: Hypnos on Wed, 23 March 2011 15:16
		Re: Need help with my C++ code By: _SSnipe_ on Wed, 23 March 2011 21:03
		Re: Need help with my C++ code By: Dover on Wed, 23 March 2011 21:25
		Re: Need help with my C++ code By: reborn on Thu, 24 March 2011 01:46
		Re: Need help with my C++ code By: danpaul88 on Thu, 24 March 2011 01:49
		Re: Need help with my C++ code By: reborn on Thu, 24 March 2011 02:12
		Re: Need help with my C++ code By: Sir Kane on Thu, 24 March 2011 20:31
		Re: Need help with my C++ code By: _SSnipe_ on Thu, 24 March 2011 20:50
		Re: Need help with my C++ code By: reborn on Fri, 25 March 2011 01:54
		Re: Need help with my C++ code By: Sir Kane on Fri, 25 March 2011 08:16
		Re: Need help with my C++ code By: _SSnipe_ on Fri, 25 March 2011 09:42
		Re: Need help with my C++ code By: Omar007 on Fri, 25 March 2011 14:30
		Re: Need help with my C++ code By: _SSnipe_ on Sat, 26 March 2011 11:32
		Re: Need help with my C++ code By: Omar007 on Sat, 26 March 2011 17:31

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