# C++ Exercises: Calculate the volume of a cylinder

## C++ Basic: Exercise-16 with Solution

Write a C++ program that calculates the volume of a cylinder.

**Sample Solution**:

**C++ Code :**

```
#include <iostream>
using namespace std;
int main()
{
int rad1,hgt;
float volcy;
cout << "\n\n Calculate the volume of a cylinder :\n";
cout << "-----------------------------------------\n";
cout<<" Input the radius of the cylinder : ";
cin>>rad1;
cout<<" Input the height of the cylinder : ";
cin>>hgt;
volcy=(3.14*rad1*rad1*hgt);
cout<<" The volume of a cylinder is : "<< volcy << endl;
cout << endl;
return 0;
}
```

Sample Output:

Calculate the volume of a cylinder : ----------------------------------------- Input the radius of the cylinder : 6 Input the height of the cylinder : 8 The volume of a cylinder is : 904.32

**Flowchart: **

**C++ Code Editor:**

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

**Next:** Write a program in C++ to find the Area and Perimeter of a Rectangle.

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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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