Depends on what you think is commonly used. If were talking about Apple, then objective-c. With Windows, they're using a new language based off of C++ and HTMLX. From tv's to phones, they use java. But most importantly everything comes from BASIC and C

There is no such thing as the 'most common language'. People use different languages for different purposes.

It deppends..

I never said such a thing, I said it depends on what he thinks. I only recommended languages for different situations.

English

Sorry, I mean to to quote the OP. But in your reply, it's not true that everything is derived from Basic and C.

On Mac systems, C, Objective-C, C++, Java, Python seem to take precedence.
On Linux systems, not really sure but I'd suppose: C, C++, Java, Python
On Windows, VB.NET, C#, C++, C, Java, Python

I see a lot of VB.NET and C++ being used for real world program development. C# has things VB.NET doesn't have and VB.NET has things that C# doesn't have. VB.NET seems to be more widely used that C# but more and more businesses are working with C#.

C++, if you don't learn this properly and put the time into it; DON'T BOTHER LEARNING IT BECAUSE YOU WILL NOT LEARN IT CORRECTLY. Put the money in and spend a couple hundred on up to date books. Buy a couple beginner books, then move into a more intermediate book after you have mastered everything from the beginner book. Then basically it's time to use reference books and books targeted at certain aspects of C++.

C++ is currently on C++11, this most up to date version. They are planning a release of C++14 here in the next year or two.

First of all , these are the most important things in almost all lenguages : the Variables, there are a lot of types of variablas out there but these 3 are the most common:

String- A string variable is a string of alphanumeric characters and allowed symbols that are contained within quotation marks. For example, "Hello world, I'm 102 years old today!" is an example of a string. Strings can also be contained within single quotes, which is useful if you want to have a string with a quotation like this: '"I hate the snow," Laurel said.' Strings are basically used for storing text.

Number- A number variable couldn't be more straightforward because all number variables store are numbers. You don't store them within quotes like strings. Instead, numbers can just be written as they are. If you want to store the number 9 in a variable, you just write 9.

Boolean- A boolean variable is one of two things: true or false. This data type is kind of like an on and off switch, so you can ask true or false questions in your code. For example, you might ask "is the video currently playing?" The response you'd get would be a boolean variable. True would mean the video is currently playing and false would mean it is not.

oh yea, isn't Ruby one of them?