C++ Source Code Analyzer Example

Global variables

Usually one wants to avoid global mutable variables in C++, since they have a state globally and therefore often is a source to bugs, especially related to threading.

For instance, in globals.cpp, the global, mutable integers as well as the global class instances should preferrably be avoided:

 int mutablePrimitive1;
 int mutablePrimitive2;
 const int constPrimitive1 = 4;
 const int constPrimitive2 = 3;

 class ComplexClass
 {
 public:
     ComplexClass();
     ComplexClass(const ComplexClass &);
     ~ComplexClass();
 };

 ComplexClass mutableComplex1;
 ComplexClass mutableComplex2;
 const ComplexClass constComplex1;
 const ComplexClass constComplex2;

 int main()
 {
     int localVariable;
     localVariable = 0;
     return localVariable;
 }