Comments on: 7.7 — Default parameters

By: zingmars

zingmars — Sat, 20 Aug 2011 15:23:33 +0000

No you can’t.

By: Sphingine

Sphingine — Sat, 20 Aug 2011 06:51:50 +0000

Can i give d definition as:

void printvalues(int nvalue1=0, int nvalue2=2)
{

cout<<"1st : "<< nvalue1<< endl;
cout<<"2st : "<< nvalue2<< endl;

}

and call the function as:

printvalues(,3);

By: otocan

otocan — Wed, 23 Feb 2011 10:57:32 +0000

Hi Alex

Shouldn’t all the examples of pointers to chars in this chapter e.g.

char *strValue

be instead

char *pszValue?

Cheers

Kevin

By: dave

dave — Fri, 30 Oct 2009 12:50:28 +0000

I must say this site is awesome and clean looking..specially how the code is displayed….looks neat! keep up good work and i am doing last min craming when i googled default params…so wish me luck! :)

By: Anshuman

Anshuman — Fri, 30 Oct 2009 07:38:05 +0000

you must not use specify the default value both in function prototype and definition

void printvalues(int nvalue1, int nvalue2)
{

cout<<"1st : "<< nvalue1<< endl;
cout<<"2st : "<< nvalue2<< endl;

}

By: simon1122

simon1122 — Thu, 24 Sep 2009 18:53:12 +0000

can any one tell me what is wrong with this one??

thak you

By: simon1122

simon1122 — Thu, 24 Sep 2009 18:51:46 +0000

//Function
#include
using namespace std;

void printvalues(int nvalue1, int nvalue2=10 );

int main()
{

printvalues(1);
printvalues(1,3);

/*scaffolding code for testing purpose*/
cin.ignore(256, ‘\n’);
cout<< "press Enter to continue.." << endl;
cin.get();

return 0;
}

void printvalues(int nvalue1, int nvalue2 = 10 )
{

cout<<"1st : "<< nvalue1<< endl;
cout<<"2st : "<< nvalue2<< endl;

}

By: Ericc

Ericc — Sun, 20 Sep 2009 14:07:24 +0000

u forgot ; in the Prototype

By: Alex

Alex — Sat, 06 Dec 2008 19:49:41 +0000

I just added a lesson on random number generation. :)

By: Pathik

Pathik — Fri, 05 Dec 2008 00:55:36 +0000

how do you get a random value in C++? For example :

int main()
{
	using namespace std;
	int y = 25; // I want y to be a random number below 100
	int x;
	
try_again:
	do
	{
		cout << "Enter a value below 100: ";
		cin >> x;
	}while (x > 100);
	
	if (x < y)
	{
		cout << "Too small" << endl;
		goto try_again;
	}
	if (x > y)
	{
		cout << "Too big" << endl;
		goto try_again;
	}
	if (x == y)
	{
		cout << "WOW!! You Got it!" << endl;
	}
	return 0;
}

You see, I want y to be a random number when program starts up.