the best book for learning C++ language is...

ladies and gentlemen introduce the best C++ book that you know
+it also should be free to download.
thank you already for your introducing.

https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list

Here's a good list of them.

I'd recommend learning C first. Pay particular attention to pointers. A lot of people get tripped up on them. Then move onto C++ which is basically C with object oriented programming grafted on top of it.

Question, why c++? It's regarded as a very difficult language.

Hop on the bandwagon and learn python or R and become a Data Scientist.

https://www.amazon.com/dp/0321958322/?tag=stackoverfl08-20

This. I think. Was the textbook I learned C++ with. Not totally sure it was quite some time ago. Updated obviously for the newer language standards. I recall that it was a very good textbook but it was created with a classroom environment in mind.

https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list

Here's a good list of them.

I'd recommend learning C first. Pay particular attention to pointers. A lot of people get tripped up on them. Then move onto C++ which is basically C with object oriented programming grafted on top of it.

Question, why c++? It's regarded as a very difficult language.

thank you.
+i already know a little C like i can use pfrintf,scanf,for,while,switch etc.but i never seen someone use C to create a long and complex program 

Hop on the bandwagon and learn python or R and become a Data Scientist.

a lot of people told me to learn python but it was a little confusing for me cause it's not as manual as C or C++.
for Example if you write:
print(a,b)
you will have
a b
but in C if you write
printf("%d%d"a,b);
you will have
ab
which is an advantage for me.

There is nothing wrong with python, but it is a scripting language, while C++ is compiled into machine code before it is run, which means that python is slow as it is interpreted while it is being run. 

For a casual programmer I'd recommend C# if you don't mind windows and you need a GUI. Java I hear good things about, never tried it myself.

Don't underestimate scripting languages. They're useful for what they do.

C/C++ though, this is a difficult language. Things that are relatively easy to do in C# are like pulling teeth in C++. C++ is absolutely essential for dealing with bare metal, device drivers and kernel space work. If you're working with an embedded device then it's pretty much what you have to write with.

I think that Canary should write his/her own programming language. 

If he's going that route then lolcode is what I'd recommend.

https://en.m.wikipedia.org/wiki/LOLCODE

Java I hear good things about, never tried it myself.

Java is the only one I learned in uni (that and Matlab and Wolfram Mathematica but they don't count), it's pretty good. From what I heard from other people though who know both it's not much easier than C. Python is easier than all of them, I tried it for a while.

I can't remember the name of the programming language I learned in middle school.  Oh, yeah, I think it was Pascal. 

OK
one question:
should i leave printing to functions or printing in "man function"?
which idea is better?

Not totally sure what you mean. Are you asking which form of printing to the console is better? Such as cout or printf?

Not totally sure what you mean. Are you asking which form of printing to the console is better? Such as cout or printf?

no that is not what i mean.
OK, i'll show it with this example:


#include<stdio.h>
#include<conio.h>
void f1(char);
int main()
{
f1();


getch();
return 0;
}
void f1(void)
{
char ch;
ch=getche();
if(ch>='a'&&ch<='z')
 ch=ch-32;
printf("\n%c",ch);
}



or should write like this:


#include<stdio.h>
#include<conio.h>
char f1(char);
int main()
{
char ch, ch2;
ch=getche();
ch2=f1(ch);
printf("\n%c",ch2);


getch();
return 0;
}
char f1(char ch)
{

if(ch>='a'&&ch<='z')
 ch=ch-32;
return ch;
}

It depends.  For something this short you're better off keeping it in one function.  For bigger programs you'd split it off.

Something like this.

#include<stdio.h>
#include<conio.h>

char f1(char);

int main()
{
  char ch1=0,ch2=0;

  ch1=getche();
  ch2=f1(ch1);
  printf("%s \n",ch2);

  return 0;
}

char f1(char ch)
{
  char chOut=ch;

  if(ch>='a'&&ch<='z')
   chOut=ch-32;

  return chOut;
}

I can't remember the name of the programming language I learned in middle school.  Oh, yeah, I think it was Pascal.

Remember the pull string?

. . . . . the selected object says "Mooo"



 

Microsoft says that Visual Basic and the C family compile into the same code.

Then, again, what else would they say?