C++ number types

C++ is a strongly typed language. That means, that every variable must be declared and that the compiler will check the type of all the variables before the compilation of your program. Without this feature, many errors would only appear at run-time, making them much harder to debug.

A simple example:
   int i;
   ...
   i = 0.5;
...results in an error message: Incompatible types: 'integer' and 'float'

In C++, there are 2 groups of numbers:

• integer numbers
• floating point numbers (have a decimal fraction)