I am writing a C++ program in which multiple classes are declared I wanted to know how to fetch the content of a vector from one class to another class.
void Registration::displayRegisteredCards()
{
vector<Registration> listReg;
Registration r1("Niketh", 1234, 10000);
Registration r2("Parth", 5678, 5000);
Registration r3("Shilpa", 2468, 15000);
Registration r4("Vijay", 1357, 20000);
listReg.push_back(r1);
listReg.push_back(r2);
listReg.push_back(r3);
listReg.push_back(r4);
int size = listReg.size();
}
how to fetch the content of a vector from one class to another class
You can access a member of a class using the member-of-object operator .
.
struct class_a {
std::vector member_vector_1;
};
struct class_b {
std::vector member_vector_2;
};
void foo()
{
class_a instance_a;
class_b instance_b;
instance_b.member_vector_2 = instance_a.member_vector_1;
// ^ member-of-object operator ^
}
In this example, the vector member of one class instance was copy-assigned into a vector member of an instance of another class.
In object-oriented languages like C++ are several ways to access member variables of one class from another class. In the following links they are summarized How to access variables in different class from other class? , https://gamedev.stackexchange.com/questions/14217/when-several-classes-need-to-access-the-same-data-where-should-the-data-be-decl
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