default argument

[Jacobhaha]

Can someone tell me what a default argument is in a function?

bool isLegal(int age, int minAge = 21)
{
 return age >= minAge;
}

legal = isLegal(age); // same as isLegal(age, 21)
if (inLouisiana())
{
 legal = isLegal(age, 18);
}

The call isLegal(age) is completely equivalent to isLegal(age, 21). C++ just
provides the default argument for you. The call to isLegal(age, 18) ignores the
default value.

[mobotus]

http://msdn.microsoft.com/en-us/library/91563f79.aspx

[Jacobhaha]

So, a default argument is not set to a value in the declaration? I can't really tell, microsoft always explains things in a way that's hard to understand.

[SECMoG1T]

This is legal int minAge = 21