CPP

c++ struct

//function having struct as a parameter
#include <iostream>
#include <string>

using namespace std;

struct car{
    string name;
    string color;
    int maxSpeed;
    int model;
};

void fun (car x){
    cout << "Name: " << x.name << endl;
    cout << "Model: " << x.model << endl;
    cout << "Color: " << x.color << endl;
    cout << "Maximum speed: " << x.maxSpeed << endl;
}

int main(){
    car c1 = {"BMW", "Red", 250, 2022};
    car c2 = {"Mercedes", "Black", 220, 2019};
    fun (c1);
    fun (c2);
}

c++ struct constructor

struct TestStruct {
        int id;
        TestStruct() : id(42)
        {
        }
};

constructor in cpp

// C++ program to demonstrate constructors
 
#include <bits/stdc++.h>
using namespace std;
class Geeks
{
    public:
    int id;
     
    //Default Constructor
    Geeks()
    {
        cout << "Default Constructor called" << endl;
        id=-1;
    }
     
    //Parameterized Constructor
    Geeks(int x)
    {
        cout << "Parameterized Constructor called" << endl;
        id=x;
    }
};
int main() {
     
    // obj1 will call Default Constructor
    Geeks obj1;
    cout << "Geek id is: " <<obj1.id << endl;
     
    // obj1 will call Parameterized Constructor
    Geeks obj2(21);
    cout << "Geek id is: " <<obj2.id << endl;
    return 0;
}

struct constructor in c++

# Definition of a singly linked list
struct ListNode {
	int val;	
	ListNode *next;
  
 	ListNode() : val(0), next(nullptr) {}
  	ListNode(int x) : val(x), next(nullptr) {}
 	ListNode(int x, ListNode *next) : val(x), next(next) {}
};

c++ struct

struct Block {
    vk::DeviceMemory memory;
    vk::DeviceSize offset;
    vk::DeviceSize size;
    bool free;
    void *ptr = nullptr; // Useless if it is a GPU allocation
 
    bool operator==(Block const &block);
};
bool Block::operator==(Block const &block) {
    if(memory == block.memory &&
       offset == block.offset &&
       size == block.size &&
       free == block.free &&
       ptr == block.ptr)
        return true;
    return false;
}