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the simple image sharer Search engine optimization SEO Company Promotion ranking Services internet marketing placement Templates Overloading operators Classes, essentially, define new types to be used in C++ code. And types in C++ not only interact with code by means of constructions and assignments. They also interact by means of operators. Here, different variables of a fundamental type (int) are applied the addition operator, and then the assignment operator. Here, it is not obvious what the result of the addition operation on b and c does. Operators are overloaded by means of operator functions, which are regular functions with special names: their name begins by the operator keyword followed by the operator sign that is overloaded. type operator sign (parameters) { /*... body ...*/ } For example, cartesian vectors are sets of two coordinates: x and y. If confused about so many appearances of CVector, consider that some of them refer to the class name (i.e., the type) CVector and some others are functions with that name (i.e., constructors, which must have the same name as the class). For example:

C Programming/Pointers and arrays Pointer a pointing variable b. Note that b stores number, whereas a stores address of b in memory (1462) How to declare themHow to assign to themHow to reference the value to which the pointer points (known as dereferencing) andHow they relate to arrays We'll also discuss the relationship of pointers with text strings and the more advanced concept of function pointers. Pointers are variables that hold a memory location. The vast majority of arrays in C are simple lists, also called "1 dimensional arrays". Declaring pointers[edit] Consider the following snippet of code which declares two pointers: struct MyStruct { int m_aNumber; float num2; }; int * pJ2; struct MyStruct * pAnItem; Lines 1-4 define a structure. In the following, line 1 declares var1 as a pointer to a long and var2 as a long and not a pointer to a long. long * var1, var2; int ** p3; Pointer types are often used as parameters to function calls. int MyFunction( struct MyStruct *pStruct ); Assigning values to pointers[edit]