For this reason evolved languages (C, Java) are typed languages,meaning that a variable is not only associated with a name but also a data type, which should be specified when declaring the variable, ...

The :String attached to the variable's name tells the computer what type of variable it is and to not accept any other type. This is the reason for the term strictly-typed .

I was 5 or 6 when I got my first sense of the joys of computer programming. This was in the early 1980s, when few people had a computer. One day, my dad brought home a Sinclair ZX Spectrum, one of ...

For example, a variable can be used in the program that controls an automatic car park barrier. It can keep track of the number of cars going in and out and decide whether to let more cars in.