How to create the code behind the class in cpp programming using Microsoft Visual Sytudio.mp4

 

Download How to create the code behind the class in cpp programming using Microsoft Visual Sytudio.mp4

Creating the code behind a class in C++ using Microsoft Visual Studio is a common practice to separate class declarations (in header files) from definitions (in source files) — improving readability and maintainability.

Here’s a step-by-step guide 👇

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🧩 Step 1: Create a New Project

1. Open Microsoft Visual Studio.

2. Go to File → New → Project.

3. Choose Console App (C++).

4. Name your project (e.g., ClassExample) and click Create.

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🧱 Step 2: Add a Header File (.h)

1. In Solution Explorer, right-click the project → Add → New Item...

2. Select Header File (.h) and name it, e.g., Student.h.

3. Add the class declaration here.

Example – Student.h

#pragma once
#include <string>

class Student {
private:
    std::string name;
    int age;

public:
    Student(std::string n, int a); // Constructor declaration
    void displayInfo();            // Method declaration
};

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⚙️ Step 3: Add a Source File (.cpp)

1. Right-click the project again → Add → New Item...

2. Choose C++ File (.cpp) and name it Student.cpp.

3. Include the header file and define the methods.

Example – Student.cpp

#include "Student.h"
#include <iostream>
using namespace std;

Student::Student(std::string n, int a) {
    name = n;
    age = a;
}

void Student::displayInfo() {
    cout << "Name: " << name << ", Age: " << age << endl;
}

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🚀 Step 4: Use the Class in main.cpp

Visual Studio automatically creates a main.cpp file. Use your class there:

Example – main.cpp

#include <iostream>
#include "Student.h"
using namespace std;

int main() {
    Student s1("Alice", 21);
    s1.displayInfo();
    return 0;
}

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🧠 Step 5: Build and Run

• Press Ctrl + F5 or click Run → Start Without Debugging

• You’ll see:

  Name: Alice, Age: 21
  

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✅ Summary

File	Purpose
Student.h	Class declaration (what it looks like)
Student.cpp	Class definition (how it works)
main.cpp	Entry point of the program

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