C++ member operator

C++ Operator

.(dot) operator and ->(arrow) operator is used to refer to the members of classes, structures, and unions.

The dot operator is applied to the actual object. The arrow operator is used with a pointer to the object. For example, consider the following structure:

struct Employee {
　　char first_name[16];
　　int age;
}; emp;

(.) dot operator

The following code assigns the value "zara" to the object emp. first_name Members:

strcpy(emp.first_name, "zara");

(->）arrow operator

If p_emp is a pointer pointing to an object of type Employee, then you need to assign the value "zara" to the first_name member of the object emp. first_name member, you need to write the following code:

strcpy(p_emp->first_name, "zara");

-> Known as the arrow operator, it is composed of a minus sign followed by a greater-than sign.

In short, use the dot operator to access the members of a structure, and use the arrow operator to access the members of a structure through a pointer.

C++ Operator