# C++ Program to Calculate Area of Square

In this post, we will learn how to calculate the area of a square using C++ Programming language.

Area of a square is calculated using the formula: Area = Side x Side.

We will calculate the area of a square using the following approaches:

1. Using Standard Method
2. Using Function

So, without any delay, letâ€™s begin this tutorial.

Contents

## C++ Program to Calculate Area of Square

```// C++ Program to Calculate Area of Square
#include <iostream>
using namespace std;

int main(){
int side, area;

cout << "Enter the side of square: ";
cin >> side;

// Calculating area
area = side * side;

// Displaying output
cout << "Area of square of side " << side << " is: " << area;
return 0;
}
```

Output

``````Enter the side of square: 7
Area of square of side 7 is: 49
``````

## How Does This Program Work ?

```    int side, area;
```

In this program, we have declared two integer data type variables named side and area.

```    // Asking for input
cout << "Enter the side of square: ";
cin >> side;
```

The user is asked to enter the length of the side. This value gets stored in the side named variable.

```    // Calculating area
area = side * side;
```

Area is calculated by using the formula, area = side x side. The result gets stored in the area named variable.

```    // Displaying output
cout << "Area of square of side " << side << " is: " << area;
```

The area of the square is displayed on the screen using the cout statement.

## C++ Program to Calculate Area of Square Using Function

```// C++ Program to Calculate Area of Square Using Function
#include <iostream>
using namespace std;

int areaSquare(int x){
return x * x;
}

int main(){
int side, area;

cout << "Enter the side of square: ";
cin >> side;

// Calling out function
area = areaSquare(side);

// Displaying output
cout << "Area of the square is: " << area;
return 0;
}
```

Output

``````Enter the side of square: 12
Area of the square is: 144``````

## Conclusion

I hope after going through this post, you understand how to calculate the area of a square using C++ Programming language.

If you have any doubt regarding the program, feel free to contact us in the comment section. We will be delighted to assist you.