I also learned a whole lot more about declaring ints than from other tutorials.

I’m learning Computer Science through a college class, and we were taught to declare variables in the header files under the private section with functions under public…

Why? I’m a little confused and eager to learn, and sadly my professor doesn’t seem to be able to explain things too well. Help please!! :)

A question about declaring variables where they are used.
I am a bit old-style programmer and i cant find the arguments for declare variables when used to be so good.

Here is my reasoning (proove me wrong, so i can change my style :)
Lets see if we have 1000 lines of code. We have a function of 300 lines somewere inside (among other functions).
If we use function variables more than once inside that function, and they are declared on their first use, isnt it harder, later on, to find out which one is global and which is declared within those 300 lines?
Or just if we had all function variables just under function name – you can see on first glance which one is there and which one is global?

int i;

where is the information like the type and the address of i placed?

“You can also assign them values on the declaration line:
int nValue1 = 5, nValue2 = 6;
int nValue3(7), nValue4(8);

Which is effectively the same as:
int nValue1 = 5;
int nValue2 = 6;
int nValue3 = 7;
int nValue4 = 8;”

Shouldn’t the last two lines be int nValue3(7) and int nValue4(8) because they are supposed to be implicit?

//pv prefix means it is a parameter value
//lv prefix means it is a local variable

int add(int pvVal1, int pvVal2)
{
  int lvResult = pvVal1 + pvVal2;
  return lvResult;
}

This method – or something like it – has been the standard at almost every company I have worked with in my 15+ years as a consultant. This notation, along with the use of meaningful variable names, makes most claims to one method of declaring variables being superior to the other pretty meaningless in my opinion.

cin >> int x;