# C++ Exercises: Find the Area and Perimeter of a Rectangle

## C++ Basic: Exercise-17 with Solution

Write a C++ program to find the Area and Perimeter of a Rectangle.

**Pictorial Presentation:**

**Sample Solution**:

**C++ Code :**

```
#include <iostream>
using namespace std;
int main()
{
int width, lngth, area, peri;
cout << "\n\n Find the Area and Perimeter of a Rectangle :\n";
cout << "-------------------------------------------------\n";
cout<<" Input the length of the rectangle : ";
cin>>lngth;
cout<<" Input the width of the rectangle : ";
cin>>width;
area=(lngth*width);
peri=2*(lngth+width);
cout<<" The area of the rectangle is : "<< area << endl;
cout<<" The perimeter of the rectangle is : "<< peri << endl;
cout << endl;
return 0;
}
```

Sample Output:

Find the Area and Perimeter of a Rectangle : ------------------------------------------------- Input the length of the rectangle : 10 Input the width of the rectangle : 15 The area of the rectangle is : 150 The perimeter of the rectangle is : 50

**Flowchart: **

**C++ Code Editor:**

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**Previous:** Write a program in C++ to calculate the volume of a cylinder.

**Next:** Write a program in C++ to find the area of any triangle using Heron's Formula.

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## C++ Programming: Tips of the Day

**Why is there no std::stou? **

The most pat answer would be that the C library has no corresponding "strtou", and the C++11 string functions are all just thinly veiled wrappers around the C library functions: The std::sto* functions mirror strto*, and the std::to_string functions use sprintf.

Ref: https://bit.ly/3wtz2qA

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